机械零件图纸上这个符号是什么意思呢?3Q_百度作业帮
机械零件图纸上这个符号是什么意思呢?3Q
机械零件图纸上这个符号是什么意思呢?3Q
这是形位公差符号就是说一个点的坐标允许公差在多少 abc 是基准S％％C7是偏差的数字
这是一个点的位置度公差标注（被测要素是一个点）。点的公差带，是一个直径7mm的球；是对基准A、基准B（最大实体时）、基准C（最大实体时）的公差值。位置度公差值“太大”了，7啊？没有弄错吗？
位置度的形位公差，
位置度的形位公差
位置度的形位公差，
扫描下载二维码All things Hawk Host
tmux is similar to screen as it lets you run numerous TTY’s in the same terminal window. It supports some very cool and intuitive features natively as well as a much more readable configuration syntax (ever looked at a .screenrc file?).
Why TMUX over Screen?
Well according to the FAQ for tmux it has the following advantages over screen:
A clearly defined cilent/server model (windows are their own clients which allows flexibility on how you handle windows. You can attach and detach different windows in different sessions without any issues)
Consistent, well-documented command interface. (You can use the same commands interactively as in the .tmux.conf file, more on that later)
Easily scriptable
Multiple paste buffers
Vi & Emacs keybindings
A more usable status line syntax (which also allows you to embed the output of a shell command, handy indeed.
Default keybindings & Functionality
The default keybindings for tmux are actually pretty intuitive, though if you’re used to screen you’ll likely get a little peeved with the default action binding of C-b, though this is easily changed to mimic screens behavior:
*NOTE* If you’re like me the Ctrl-b binding isn’t horribly intuitive especially if you’re used to screen. You can rebind this by putting the following in ~/.tmux.conf:
set -g prefix Ctrl-a
Ctrl-b c Create new window
Ctrl-b d Detach current client
Ctrl-b l Move to previously selected window
Ctrl-b n Move to the next window
Ctrl-b p Move to the previous window
Ctrl-b & Kill the current window
Ctrl-b , Rename the current window
Ctrl-b % Split the current window into two panes
Ctrl-b q Show pane numbers (used to switch between panes)
Ctrl-b o Switch to the next pane
Ctrl-b ? List all keybindings
Now these are pretty self explanatory – the real magic (for me) of tmux is the ease of modifying the default behavior to do what you want, but first things first: let’s explore the default behavior of tmux.
Basic Window Handling
Start up tmux with the tmux command and you should be greeted with a simplistic terminal window that resembles screen – the only difference is it has a default status bar which is nice (easily added to screen as well).
Now let’s create a couple of windows and go through them (we’ll be using the default bindings). Hit Ctrl-b c a few times to create a few windows, you should notice that there are more tabs in the status bar.
Now if you’re like me you like to have descriptive names of which each window is for, so let’s rename them by hitting Ctrl-b ,. It should prompt you to rename the current window – type anything you want and hit enter. Now the current window is renamed to what you specified. Now going forward I’m going to have two windows open respectively named “window1” and “window2”.
Once you rename your windows lets switch back and forth. We have several different ways of switching windows, so I’ll go over the ones I personally use:
Ctrl-b n (Move to the next window)
Ctrl-b p (Move to the previous window)
Ctrl-b l (Move to the previously selected window)
Ctrl-b w (List all windows / window numbers)
Ctrl-b &window number& (Move to the specified window number, the default bindings are from 0 – 9)
Now these ones fairly self explanatory however they don’t really cater to a lot of different windows. What if you have 10+ windows open? It becomes quite tedious to find the window you want – but don’t fret! Tmux has a find-window option & keybinding. Type Ctrl-b f and type in the window name you want (it actually searches for the window so you can type in only part of the name of the window you’re looking for).
You can also get a list of the windows in the current session by executing the list-windows command. To execute commands interactively you type Ctrl-b : which will bring up a text prompt. From there you can execute any command tmux supports interactively (tab completion is supported).
Basic Pane Handling
One of the most powerful features tmux offers is the ability to split up your current window into “panes”. Anyone whose familiar with tiling windows managers will feel quite at home. It’s a bit difficult to explain this in words so a simple screenshot will suffice:
Now here are some basic key bindings and commands to split the terminal window (vertically and horizontally) and to switch between them
Ctrl-b % (Split the window vertically)
Ctrl-b : “split-window” (Split window horizontally)
Ctrl-b o (Goto next pane)
Ctrl-b q (Show pane numbers, when the numbers show up type the key to goto that pane)
Ctrl-b { (Move the current pane left)
Ctrl-b } (Move the current pane right)
Now some obviously the default bindings don’t encompass some of features, such as splitting horizontally. I personally rebind the keys so “|” splits the current window vertically, and “-” splits it horizontally. Not the easiest things to type, though easy to remember.
You can achieve this by putting the following in ~/.tmux.conf or by typing it in the interactive prompt (Ctrl-b :). Keep in mind if you do the latter it will only be in effect for that session:
bind | split-window -h
bind – split-window -v
Advanced Window Handling
Now that we went over the basics lets dive a little deeper into some “advanced” features of tmux. This includes moving windows around, linking windows together, switching windows from different sessions and much more. By default tmux doesn’t have key bindings for these features, so we’ll be entering them in the interactive dialog (accessed by typing Ctrl-b :) – keep in mind tmux is very scriptable and you can easily create your own key bindings for all of these.
Moving Windows
Now if you want to move a window you can use the move-window command. The command to do this:
move-window [ -d] [ -s src-window] [ -t dst-window]
swap-window [ -d] [ -s src-window] [ -t dst-window]
Similar to the above command except both windows have to exist – if they both do the window with the ID source and destination windows will be swapped.
Advanced Pane Handling
When you split up a window into multiple smaller windows they’re referred to as panes. Tmux also offers “layouts” for the panes, or the default positioning and behavior when you create a new window. You can switch through the panes by using the key binding Ctrl-b &space& which will toggle through the different layouts. Each one has different behaviors such as main-vertical which means the current active pane will take up more space in the current window, or even-vertical which will split the panes equally. Since this is difficult to describe in text I believe a few screen shots are in order:
Now that you’ve seen the different layouts let’s see what we can do with these panes. As mentioned above in the “Pane Handling” section you can switch through panes by issuing the Ctrl-b o key combination (which is using the down-pane command) or by typing Ctrl-b q which will list the pane ID’s and you select the one you want.
Make your pane into its own window
If you want to take a pane and make it into its own window you do the following:
Ctrl-b : “break-pane”
Simple enough, you should now have the pane in its brand new window. If you don’t want it to automatically make the pane you just broke out as the active window issue the “-d” switch which will simply break the pane to a new window but keep you in the current window.
Resizing Panes
You can also resize panes if you don’t like the layout defaults. I personally rarely need to do this, though it’s handy to know how. Here is the basic syntax to resize panes:
Ctrl-b : resize-pane (By default it resizes the current pane down)
Ctrl-b : resize-pane -U (Resizes the current pane upward)
Ctrl-b : resize-pane -L (Resizes the current pane left)
Ctrl-b : resize-pane -R (Resizes the current pane right)
Ctrl-b : resize-pane 20 (Resizes the current pane down by 20 cells)
Ctrl-b : resize-pane -U 20 (Resizes the current pane upward by 20 cells)
Ctrl-b : resize-pane -L 20 (Resizes the current pane left by 20 cells)
Ctrl-b : resize-pane -R 20 (Resizes the current pane right by 20 cells)
Ctrl-b : resize-pane -t 2 20 (Resizes the pane with the id of 2 down by 20 cells)
Ctrl-b : resize-pane -t -L 20 (Resizes the pane with the id of 2 left by 20 cells)
… etc
Hopefully you get the jist – don’t get confused! Simply load up a tmux session and split the window a couple of times and issue the above commands. It should become fairly evident how it behaves after fiddling with it for a bit.
Utilizing the client / server model
I’ve avoided mentioning that a lot of these commands can actually be applied to numerous tmux sessions which allows quite a bit of flexibility – the reason for avoiding it is it’s too much information all at once! An example of using this functionality is if you have two sessions open you can “link” or “move” windows across different sessions – unfortunately the actual “how-to” will be in Part 2.
Conclusion
Tmux may be a bit confusing however it’s worth putting in a few minutes to check it out and see what it has to offer – quick easy and intuitive.
Upcoming in Part 2
I’ll be going over several tips and tricks for tmux including:
Custom hotkeys
Custom window styles & colors
Scripting with tmux (bash, sh)
How to use the server / client model further
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如题：谢谢各位！！！！！！0 A& s: j' a' J: @
file:///D:/Program%20Files/QQ2009/Users//Image/)0XFLJR7OSFM.jpg
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3/16“-200UNS-LH（每英寸有200牙）[/b]
刚没贴上现打出来了。
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这个是来自国内的图纸吗？？
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美国统一螺纹特殊系列7 L5 V4 O! H# C& k
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总评分:&威望 + 1&
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9 L2 v. i+ G- q&&~
这是标记的详细定义" ^+ S% d3 ]- |: ^0 x
' f9 S* _# B+ O$ S, n# g
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感谢机械同志。你真有才。
他的意思是M5大小的螺纹左旋，不是我们普通的右旋对不？
&是公称直径3/16“（4.76mm），螺距0.127mm的左旋细牙螺纹&
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