查询词典 mains supply

Yes. From Roundwood reservoir in county Wicklow of a cubic capacity of 2400 million gallons, percolating through a subterranean aqueduct of filter mains of single and double pipeage constructed at an initial plant cost of 5 pounds per linear yard by way of the Dargle, Rathdown, Glen of the Downs and Callowhill to the 26 acre reservoir at Stillorgan, a distance of 22 statute miles, and thence, through a system of relieving tanks, by a gradient of 250 feet to the city boundary at Eustace bridge, upper Leeson street, though from prolonged summer drouth and daily supply of 12 1/2 million gallons the water had fallen below the sill of the overflow weir for which reason the borough surveyor and waterworks engineer, Mr Spencer Harty, C.

48流了。从威克洛郡的容积二十四亿加仑的朗德伍德水库，流经达格尔河、拉思唐、唐斯峡谷和卡洛希尔，流进坐落于斯蒂尔奥根那二十六英亩的水库，中间的距离是二十二法定英里。这条有着过滤装置的第一期施工的单管及复管地下引水渠，根据合同直线每码的铺设费为五英镑。再由一批水堰进行调节，以二百五十英尺的坡度在上利森街的尤斯塔斯桥流到本市界内。但是由于夏季久旱，再加上每天供水一千二百五十万加仑，水位已降到低于排水口。

Dr Barrett proposes that the immersion heater elements be turned on and off remotely using ripple control - a communication system with transmissions sent through the mains electricity supply as high-frequency pulses.

"我们可以通过波纹式控制遥控浸入式加热器（一个传输电源形式为高频率脉冲的通信系统）上的一种小的开关接收这些信号，根据信号提供的能源供应量来控制加热器的运作"Barrett博士说。

In this process, the supply frequency of the motor is not changed; it is always identical to the relevant mains frequency.

在此过程中，电机的供应频率是不变的。它总是与相关的主频率相同。

AC Test Power Supply with AC-DC-AC conversion means, effectively prevent the mains voltage and frequency fluctuations of the dielectric loss test the accuracy of the impact of even the generator, the instrument can also be run correctly.

交流试验电源采用AC-DC-AC转换方式，有效避免市电电压及频率波动对介损测试准确性影响，即便是发电机发电，该仪器也能正确运行。

2TheMax GPX750 PSU for the desktop computer features total output of 750W, rated supply voltage of 115V to 230V auto range, rated mains frequency of 47 to 63 Hz, rated input of 115V at 10A or 230V at 5A, efficiency of 85% minimum at typical load, holdup time of 16.6ms at nominal line under full load condition, power good signal between 100ms to 500ms, over current protection at 110% to 150% individual output power, over voltage protection for +5V is between 5.8V to 6.3V,+12V from 14V to 17V, 3.3V from 3.6V to 4.2V, air flow by DC fan, operating temperature of 0°C to 50°C and operating humidity of 20% to 90% non-condensing.

2themax gpx750电源为桌上型电脑的功能总产量750瓦特，额定电源电压115v到230v汽车范围，额定工频47至63赫兹，额定输入的115v在10 A条或230v在5 ，效率85 ％，最低在典型负载，持的时间16.6ms的名义在网上下，满负荷条件下，电源良好信号之间的100 ms到500ms ，过电流保护在110 ％至150 ％个别的输出功率，过电压保护，为5 V是之间的5.8 V至6.3v ，+12 V的从14v至17v ，电压为3.3 V从V到3.6 V至4.2 V ，空气流量由直流风扇，操作温度0° C到50 ° C和运作中的湿度为20 ％至90 ％，非冷凝。

090 Adequate illumination shall be provided with a back-up lighting system independent of the mains power supply.

要有灯光系统提供照明。还需要有一个非备用的供电设备。

There she persuaded a dying Cherokee settlement of 300 people, mostly chicken-catchers in run-down shacks, to build their own 16-mile water-line to the mains supply.

在那里，她说服了一个濒临消亡的拥有300人的切诺基族居住地，其中大部分人是住在破旧的棚屋的捉鸡工人，她说服他们建立起16英里长的水渠通向供电网。

If power for the working of any Base Station is taken from a public electricity supply, no direct connection shall be made between the supply mains and the

十二。 如运作任何基地电台的电力来自公共电力供应，则电源不得与天线直接连接。

Finally, a meter will be required to ensure that the system owner can be credited for any PV power fed into the mains supply.

供应这将通常提供一张12月保单，同时交换器2年和模块15-25年的计划保证书。

Requirements for the site in a urban area: The building is equipped with the mains supply and grounding system for lightning protection, the floor is strong enough to meet the technology requirements, and the antenna can be mounted on the tope of the building.

有必要的建站条件，对于市区站点要求：楼内有可用的市电及防雷接地系统，楼面负荷能满足工艺要求，楼顶有安装天线的场地。对于郊区和农村站点要求：市电可靠，环境安全，交通方便及便于架设铁塔等基建设施。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。