卷登记项
volume entry
库登记项
library entry
就业登记
employment registration
居住登记
registration of residence
拒绝登记
refusal of registration
拒收物资登记簿
stores rejected book
军人登记册
military register
库登记表
base table
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