Opening-closing line的意思|示意

Pneumatic valve and plug valve of a type is the same, only it's shut down parts of a sphere, the sphere rotates around the body center line to achieve the opening and closing a valve.

气动球阀和旋塞阀是同属一个类型的阀门，只有它的关闭件是个球体，球体绕阀体中心线作旋转来达到开启、关闭的一种阀门。

The pressurization of the servocontrol involves the opening of the pressure-line closing valve (2) and of the return-line closing valve (3).

进行压力伺服控制的正常过程包括，打开压力管路关闭活门和回油管路关闭活门。

The harmonic screw type valve is driven by the double wave harmonic screw. It can transform circle movement to line movement for the closing and opening of the valve.

谐波螺旋式阀门采用双波谐波螺旋传动，实现由圆周运动向直线运动的转化，实现阀门的启闭。

You should always keep up a daily high and low chart with opening and closing on it and keep your Trend Line on this daily chart.

你应该始终保存含有每日开收盘价的日图表，并且画上趋势线。

Repeated opening and closing of Ambulant from the command-line interface (CLI) destroys the error buffer each time.

通过命令行界面(CLI)重复打开和关闭ambulant每次会破坏错误缓冲。

Line 5: XHTML documents must include opening and closing tags.

第5行：XHTML文档必须包含开始和结尾标记。