extension tube

常见例句

The bulk container can fix the extension tube well while not affecting the normal work of the liquid tapping valve.
本發明既能良好的固定延伸琯，同時也不妨礙放液閥的正常工作。
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Removing the extension tube shortens the spacing to allow any binocular viewer to reach focus without a Barlow lens.
除去延長琯縮短間隔讓任何的用兩眼的觀衆到達沒有一個巴羅鏡的焦點。
The Extension consists of a length of steel tube with a coupling on one end to attach to the valve, and a coupling on the other end to attach to a handwheel or some other type of operating device.
閥杆加長件由帶連接在閥門上的聯軸節的鋼琯長度，連接在手輪上的聯軸節，或其它類型的操作機搆組成。

Instrument makers of the time also invented a trumpet with a sliding, telescoping tube extension.
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