working tube造句

The surgeon leads the endoscope through the working tube while in surgery.
The brochure also provided numbered stickers to aid consumers in reinstalling working tubes in their correct sockets.
He rented space in the basement of a post office, and developed a working tube that could draw and move a dot around the screen.
It can be constructed in any desired key depending on the length of tubing used; and a working tube trumpet can be retuned to a sharper pitch by trimming the hose.
It's difficult to find working tube in a sentence. 用working tube造句挺难的