cam followercatheadcrossbarjibpiston rodpush rodta ettail armtappertappet rodtransverse member挺: stick out; bulge or protrude ...杆: shaft; rod; bar阀挺杆: valve lifter; valve push rod; valve tappet挺杆臂: tappet arm挺杆阀: tappet valve下载手机词典可随时随地查词查翻译