?放牧场栅栏门
... bumper bracket 缓冲架 bumper gate 放牧场栅栏门 bumper guard 缓冲保护器 ...
?触压栅门
... 自动旋转栅门 Turnstiles, automatic 带栅门的 gated 触压栅门 bumper gate ...
闸门槛
He got his start working at auto parts manufacturer Flex-N-Gate then left in 1978 to found his own company, Bumper Works, which makes a one-piece car bumper design that is the industry standard.
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