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单词
needle valve
释义
needle valve
noun
:
a valve consisting essentially of a slender pointed rod or needle fitting into a conoidal seat and capable of fine adjustment
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rf
rf
RF
R factor
RFB
RFC
RFD
RFG
rfg
rfg
rfl
rfn
RFP
rfr
rf station
rfz
RG
rgb
rgr
rgt
Rh
rH
RH
Rh
rh
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更新时间:2026/2/27 23:53:03