在地 关 键 词 计数器 ; 延迟线 ; 闸门时间 ; 相位差 ; 标准频率 [gap=1339]Key words counter; delay line; gate time; phase difference; standard frequency
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... 基准频标 primary frequency standard 规范频率standard frequency 时间同步 synchronization ...
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standard frequency station [通信] 标准频率电台
standard frequency spectrum 标准频谱
standard-frequency meter 标准频率计
basic standard frequency 基本标准频率
medium standard frequency 标准中频
standard frequency and time signal 标准频时信号 ; 校准频率和时间信号
standard frequency service [通信] 标准频率业务
standard frequency system 标准频率系统
The controlling system of active frequency stabilization gets the frequency deviation from the frequecy discrimination system and adjusts the length of resonant cavity to make the frequency revert to the standard frequency, so we can achieve stabilization of frequency.
主动稳频控制系统通过鉴频系统鉴别频偏,继而自动调节腔长,将激光频率回复到特定的标准频率上,从而达到稳频的目的。
参考来源 - 单纵模激光器主动稳频控制系统研究The mining submerged water-level sensor is developed for monitoring water level of the header in the mine. It can successively detect and change the water value into the standard frequency signals, which are then sent to the upper equipments.
矿用投入式水位传感器是为检测煤矿井下水仓水位而研制的,它可以连续将水位信号转换成标准频率信号传送给上位机,并具有实时显示水位值、超限声光报警、频率信号输出等功能。
参考来源 - 矿用投入式水位传感器的研究与设计·2,447,543篇论文数据，部分数据来源于NoteExpress
By doing so, there will only be standard frequency error in theory and decrease the measuring error greatly.
这样使测频误差在理论上只含有标准频率误差，可以使测量误差降低。
The standard frequency in television signals is a signal with high stability and accuracy, controlled by the atomic clock.
电视信号中的标准频率信号是受原子钟控制的高稳定度、高准确度的信号。
High precision quartz oscillators were used for the transmission of BPV standard frequency and time signals at Shanghai Observatory.
在上海天文台BPV标频和时间信号的发播工作中，使用了高精度石英晶体振荡器。
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