frequency selective system 选频系统
selective system of preference 选择性优惠关税制度
selective system of gear changing 变速箱的选择机构
Yeast selective system 酵母筛选系统
counter selective system 计数器选择系统
forward selective system 正向选择法
Selective Service System 选征兵役制 ; 义务兵役制 ; 征兵局 ; 制度
selective-calling system 选择呼叫设备
On the basis of an analysis of fluidized-bed boiler dynamic performance the authors have designed a simplified model after consulting a self-adaptive SPC dual-ring selective system.
在对沸腾燃烧锅炉动态特性进行分析的基础上,设计了一种简便的模型,参考自适应SPC双环选择性系统。
However, the Selective Service System remains in place as a contingency plan; men between the ages of 18 and 25 are required to register so that a draft can be readily resumed if needed.
然而,选征兵役制作为意外事故防范计划还保留着。 法律规定年纪18-25的公民必须进行登记注册,以备紧急需要时能迅速恢复义务兵役。
The selective accretion theory chalks it up to high gas density in the early solar system, during the planet's formation.
选择性附加理论写出它的高气体密度在早期太阳系,在行星的形成。
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