bellows ball的相關資料：
臨近單詞
bellow
bellows-type mechanical seal
bellows-type expansion joint
Bellows type rubber air spring
bellows differential flowmeter
bellows-operated pilot valve
Bellows balance type safety valve
bellows type pneumatic suspension
bellows intercommunicating gangway
Bellows-type gas or orifice meter
bellows-type pneumatic suspension
