There were 15 minutes between the first air raid alert and the sounding of the all-clear signal.
从第一个空袭警报到警报解除号音其间有15分钟。
The fighting starts when a signal such as an air horn or whistle blows, and can last anywhere from a few minutes to a few hours.
当用号角或口哨发出信号时，大战就可以开始了，在任何位置都行，能持续几分钟到几个小时。
The brain then suddenly sends an emergency signal, telling the person to wake up and take in a big gulp of air.
然后大脑会忽然发出一个紧急信号，惊醒人们赶紧深呼吸一下。
Firstly, the paper models the multivariable discrete state-space model of the air transmission unit by the lab method, using multi-dimensional inverse m series as input stimulus signal.
首先利用多维逆m序列作为激励输入信号，用实验法建立出空气传送部分的多变量离散状态空间模型。
Digital signal processor (DSP) was adopted to design portable rotating air blower fault diagnosis instrument, and the system hardware structure and the software designing ideas were expounded.
以数字信号处理器DSP研制便携式旋转风机故障诊断分析仪，并详细阐述了系统的硬件结构以及软件设计思想。
We use this air horn to give a signal in the event of emergency.
应急情况下，用这个气喇叭发信号。
Emanometer is composed of normal atmosphere air mesh grid pulse ionization chamber, signal magnify and screen unit and MCU system.
仪器主要包括常压空气网栅脉冲电离室，信号放大与甄别和单片机系统。
A device in which compressed air or steam is driven against a rotating perforated disk to create a loud, often wailing sound as a signal or warning.
一种装置，其中被压空气或蒸汽冲击一个旋转的有孔圆盘而产生巨大的、常常是尖锐的声音，作为信号或警报。
All entrants may transmit only one signal on the air at any given time.
所有参赛电台在同一时间只能发送一个信号。
CDMA system is a full synchronous system. In order effectively to demodulate the signal in the air, it is required to set the searching window.
CD MA系统是一个全同步系统，为了有效解调空中信号，需合理设置搜索窗口。
Triggering the safety air bag in Toyota Model 94 Camry car is controlled by electronic-controlled module according to the signal from collision sensor.
日本丰田佳美94型轿车安全气囊的触发由电控模块根据碰撞传感器的信号进行控制。
The effects of the signal line length, the filter and the sampling frequencies on measuring air pressure pulse were studied in this paper.
研究了连接动态压力传感器的信号线长度、放大器的滤波频率和数据采集系统的采样频率对空气压力波测量的影响。
In the course of transmission, mud pulse signal mainly disturbed by drilling pump, engine in the bottom hole, air bladder contained in mud and movement of drilling equipment.
泥浆脉冲信号在传输过程中主要受钻探泵、井底动力机、泥浆中的气泡及活动钻具的干扰；
The surveying signal of air blower can meet the demands of DCS and the instrument panel on the spot at the same time.
鼓风机的测量信号能同时满足DCS以及就地仪表盘的要求。
Of soil moisture, air temperature, such as signal acquisition, automatic irrigation.
通过对土壤湿度，空气温度等信号的采集，实现自动灌溉。
The vehicle compressed fluxion air is used to conduct the control signal source and brake, so in special environment of plateau the vehicle system brake performance may variety.
铁路车辆是靠压缩的流动空气作为制动动力源及控制信号源，所以高原特殊环境下铁路车辆制动性能可能发生变化。
The result is obviously lower than the maximum tracking speeds of point signal seekers of ordinary air to air missiles.
所确定的指标明显低于常见的空-空弹点源信号导引头的最大跟踪角速度。
In view of this, a new method based on the capacitance characteristics differences among air, water and ice is propounded, which converts capacitance value to digital signal directly.
鉴于此，本文提出了基于空气、冰与水的电容特性差异，通过电容值到数字信号的直接转换来测量冰层厚度的新方法。
The design of structure of ultrasonic transducer and circuit for signal disposing can realize dual air bubbles monitoring function.
设计了超声波换能器的结构和信号处理电路，能够实现二重气泡监测功能。
Automatic zero calibration with ambient air on every start of the system, optical and acoustical signal after finishing of calibration.
开启系统时，仪器会自动进行零校准。校准完毕后会出现光学和声学信号。
The utility model is mainly used in the railway locomotives air brakes to transport compressed air and transfer the brake operation signal.
本实用新型主要用于铁道机车车辆空气制动机输送压缩空气和传递制动操作信号。
The portable anti-aircraft missile field training system consists of center control computer, signal commutator, collimated training missile and anti-air commanding lens.
便携式地空导弹野外训练系统模型由中央控制计算机、信号转接器、瞄准训练弹和对空指挥镜组成。
Cooling control system between finishing mill regulates the water-flow with electric signal and compressed-air to control the temperature of the hot strip steel.
精轧机机架间带钢冷却控制系统，用电气控制信号和压缩空气联合控制冷却水的流量，从而达到热轧带钢温度控制的目的。
Railway system: railway signal room, railway locomotive, Electric power substation alongside railway, Generator car with air-conditioner.
铁路系统：铁路信号房(楼)、铁路机车、铁路沿线变电所、空调发电车等。
Channels are dynamically distributed using the control signaling. MSK modulated digital common signal is used as air signal, characterized by its fast connecting.
由控制信道来动态分配信道，空中信令采用MSK调制的数字共路信令，具有接续速度快的特点。
After a white noise signal has been taken as the input of a standard sound source, a static acoustic test is conducted for a prototype silencer without air flow and at the normal temperature.
采用白噪声信号作为标准声源的输入信号，在常温无气流条件下对消声器实物模型进行了静态放声试验。
The underwater acoustic signal can cause surface wave motion at the water-air interface and hence modulate the magnitude of the laser beam falling on the water surface.
水下声信号在水-空气界面会引起表面波动而对打在水表面的激光进行调制。
The underwater acoustic signal can cause surface wave motion at the water-air interface and hence modulate the magnitude of the laser beam falling on the water surface.
水下声信号在水-空气界面会引起表面波动而对打在水表面的激光进行调制。
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