retainer spring造句

例句与造句

1. Located mid-length on the flash hider is a cut-out with a ring retainer spring that secures a rifle grenade to the barrel.
2. At its muzzle end, the device has a conical flash hider, and on its tapered, external surface  a retainer spring and two collars, used to attach and guide rifle grenades.
3. The engine shown to the right has its carburetor in the center of the zinc alloy casting to the left . ( It uses a flow restriction, like the choke on an old car engine, because the venturi effect is not effective on such a small scale . ) The valve reed, cross shaped above its retainer spring, is still beryllium copper alloy, in this old engine.
4. It's difficult to find retainer spring in a sentence. 用retainer spring造句挺难的