空位 空位的英文 英语翻译 vacancy; vacant lattice site 拓展翻译 空位串null bit string空位簇vacancy cluster空位行null bit string空位盘vacancy disk空位缺陷vacancy defect空位元素vacancy element空位置empty position空位字符blank character净化空气总管clean air manifold净空headroomclear 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