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undisturbed soil
bridg.constr. 不受扰动土; 未扰土
construct. 原状〔未扰动〕土
hydroel.st. 未扰动土; 原状土
tech. 原状土 (样); 未扰动土 (壤); 未搅动土; 不扰动土
undisturbed soil
: 18 phrases in 5 subjects
Bridge construction2
Ecology1
Engineering geology3
Hydroelectric power stations3
Technology9