LED housing 是指什么

LED housing 是指什么 机械中,spindle housing是指什么关于机床的 电热偶里有个英文单词 housing 是指哪个部位啊?好象housing material 有abs和ceramic两种.abs和ceramic都指什么啊? housing housing LED光谱图R9是指什么 housing market 和real estate market 有什么区别?它们完全是从属关系吗? 英语翻译cartridge housing one fixed drilling unit including 5 drills which do process for cartridge housing.在这句话中 cartridge housing 记住是机械类英语，是指单向阀还是轴承壳呢？或者还有其他的意思吗？ 请问：Housing Unit with LED fluorescent 和sandblasting cabinets 有谁是做LED的呢? LED外延层指什么LED外延层和外延片是同一个概念吗? block和housing estate有什么区别? housing and ports机械中什么意思 block和housing estate有什么区别? LED外延片指什么 led白光做到Ra=90 Ra是什么意思led白光做到Ra=90 Ra是指什么值? 湖北2010英语高考卷中 the house prices我在很多地方看到都是housing price,为什么这里又是house prices,housing和house修饰名词有什么区别. LED的5050是代表什么意思 这英语句话看不太明白Rapid business developments have led to a flood of newcomers,causing a scarcity in housing and crowding schools.后面半句是 causing a scarcity in (housing and crowding schools)还是causing a scarcity in housing (and