开关系数
switching coefficient
空白关系
void relation
空间时间关系
space time product; space time relationship
控制关系式
control relationship
拉关系
try to establish a relationship with sb.
劳动关系法
law of labour relations
劳动关系调整法
regulation law of labour relation
劳资关系
employee-employer relations; industrial relations; labor relation
净化空气总管
clean air manifold
净空
headroom
clear space
净空高度
head room; head-room clearance; overhead clearance
净空间
clear space
静止空气粘滞性
viscosity of stationary air
绝对空间
absolute space
绝对真空
absolute vacuum
军事航空管制
military air-traffic control
卡尔真空烘箱
carr oven
开放领空
open skies
开空头支票
kite flying
开空头支票的人
paper hanger