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to phrases
one-way valve
construct.
单向〔止回〕阀
;
止回〔止逆〕阀
hydroel.st.
单向阀
;
止回阀
;
逆止阀
met.
单通阀
one way valve
railw.
单向阀
one-way valve
:
6 phrases
in 2 subjects
Refrigeration
1
Technology
5
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