Clock Selection  时钟选择

free-pendulum clock (=Shortt clock)  萧特钟

addition coefficient selection in equipment selection  设备选型附加系数

GT selection rules (=Gamow-Teller selection rules)  加莫夫-泰勒选择定则

railway route selection；railway location；approximate railway location；location of railway route selection  铁路选线

Route Selection and Station Site Selection  线站位

site selection and capacity selection  选址和定容

variable selection and value selection  变量选择和值选择

’clock’method  时钟法

18 o’clock statistic of the railway station  十八点统计

40 GHz clock recovery  40GHz时钟提取

absolute clock  绝对时钟

access of synchronous clock  同步时钟接入

active high clock  高态有效时钟

active low clock  低态有效时钟

airborne clock  空用时钟

alarm clock  闹钟; 警报时钟; 警报锺; 警报器

alarm clock movement  闹钟机芯

All optical clock extraction  全光时钟提取

all optical clock recovery  离散小波变换; 全光时钟提取