frictional rest escapement造句

例句与造句

1. It is a frictional rest escapement, with the teeth in contact with the cylinder over the whole balance wheel cycle, and so was not as accurate as " detached " escapements like the lever, and the high friction forces caused excessive wear and necessitated more frequent cleaning.
2. It's difficult to find frictional rest escapement in a sentence. 用frictional rest escapement造句挺难的