... piston junk ring bolt ==> 活塞压环螺钉 piston key ==> 活塞键 piston knock ==> 活塞爆击,敲缸 ...
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B1106吧哈美国-行军上低音乐器，降B键，. 500“内腔，10”喇叭，镀镍活塞，透明亮漆，带箱子。
B1106 Bach USA - Marching Baritone, key of Bb,. 500 "bore, 10" bell, nickel-plated pistons, clear lacquer, with case.
开发的新型管道封堵器由中心管、气囊、活塞、弹簧、夹板、护板、内接头、外接头、连接板和楔键等组成。
A newly developed pipeline plug is composed of a central pipe, balloon, piston, spring, clamp, backplate, inside and outside joints, connecting plate and a wedge key.
一个不锈钢从动轴包括一个被控制键和不锈钢紧固件，以及一个双作用活塞防止离合器和刹车功能重叠。
A stainless steel output shaft includes a captive key and stainless steel fasteners, and a single double-acting piston prevents overlap of the clutch and brake functions.
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