单词 | piston |
释义 | piston [`pis·tǝn] ELECTROMAGNETISM A sliding metal cylinder used in waveguides and cavities for tuning purposes or for reflecting essentially all of the incident energy. Also known as plunger; waveguide plunger. ENGINEERING See <<force plug>> MECHANICAL ENGINEERING A sliding metal cylinder that reciprocates in a tubular housing, either moving against or moved by fluid pressure. |
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