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碎石底
 碎石底
tech. rubble bed
|
 ATM 层
IT ATM layer
 层
gen. storey; floor
hydroel.st. layer; story
math. stratum
wind. class

to phrases
碎石底
tech. rubble bed
碎石底: 15 phrases in 5 subjects
Automobiles1
Bridge construction1
Engineering geology2
General1
Technology10