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constant head
construct. 常〔不变〕水头
earth.sc. 常定水头
eng.geol. 定水头
oil 不变水头; 常水头
plast. 恒定水压
constant head
: 35 phrases in 7 subjects
Earth sciences2
Ecology1
Electronics1
Engineering geology13
Oil / petroleum1
Plastics1
Technology16

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