To order, specify description and extension length from center line of valve to handwheel.
订购时，注明描述信息和从阀门中心线至手轮的加长长度尺寸。
The extension of a length called the gauge length is studied during the test.
被称为标距长度的这段长度延伸问题将在测试进行时研究。
Upper arm is about equal in length to the shoulder blade in order to allow for good extension.
上臂长度约等于肩胛骨，以便为良好的扩展性。
Use extra length extension thermostat to extend into water storage tank.
采用额外长度的加长温控杆，延伸到水容器内部。
Use standard or extra length extension thermostat.
采用标准或加长温控杆。
Camera extension: The length of bellows in a process camera.
相机伸长度：制版照相机的暗箱长度。
Camera extension: The length of bellows in a process camera.
相机伸长度：制版照相机的暗箱长度。
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