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to phrases
primary wave
gen. P 波
avia. 一次波
bridg.constr. 初波; 纵波压缩波
earth.sc. 压缩波
el. 初相
expl. 也称 P 波质点在波的传播方向运动的弹性体波,在常规地震勘探或声波测井中使用该波
oil P波; 纵波
space 初至波
tech. 原始波; 一次电波; 地震纵波; 初始波; 初生波; 疏密波
primary wave: 7 phrases in 5 subjects
Animal husbandry1
Electric machinery1
Engineering geology2
Oil / petroleum1
Technology2

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