高压

In the voltage doubling rectifying circuit, the high voltage has been realized by the positive and negative way, and the voltage between the cathode and anode could reach 1700 V. In the fly-back switching high-voltage power supply, considering the requirements of each unit of the driving circuits on the power supply, the three-group voltage outputs including low-voltage outputs have been realized: 1600V/20mA,12V/500mA, 5V/50mA, in which UC3842 has been used to achieve pulse width modulation.

在倍压整流电路设计中，采用正、负电压方式实现高压，有效降低了阴阳极间所需的高压，最终两极间可产生1700V电压；在反激式开关电源电路设计中，利用UC3842芯片实现PWM调制，考虑到驱动电路各单元对电源的需求，设计了包括低压电源在内的三组电源输出：1600V/20mA，12V/500mA，5V/50mA。

The results indicated that the daily and the yearly changes of calm wind distribution were obvious.Under the weather situation of topographic trough in north China or low pressure,the foreside of high pressure and high pressure,the calm weather occurred easily and its duration was longer.

结果表明：静风分布有明显的日、年变化规律，在华北地形槽或低压、高压前部和高压的天气形势下易出现静风天气现象且持续时间较长。

According to examples of engineering, the economy of gas storage between high pressure pipeline and spherical gasholder is compared, and the utilization condition of gas storage with high pressure pipeline in gas transmission and distribution system is discussed.

结合燃气输配系统实例，比较了高压管道与球罐储气的经济性，讨论了高压管道在城市燃气输配系统中的使用条件。

The determination of gas storage pressure in high-pressure tube bank and the calculation of actual gas storage volume are analyzed. The metal consumption of high-pressure pipeline is compared with that of spherical gasholder.

分析了高压管道储气方式储气压力的确定、实际储气体积的计算，进行了高压管道与球罐的金属消耗比较。

D. To adopt high pressure coill heat exchanger to warm up and gasify lox, so plant arrangement is reasonable.

采用高压绕管式换热器复热汽化高压液氧，可靠性高，设备布置紧凑。

The SDB eclogites, on the other hand, were strongly overprinted by a high-pressure granulite-facies metamorphism under conditions of p=1.9~2.0 GPa and T=873~948℃, followed by temperature and pressure decrease to the amphibolite-facies. The process of temperature increase with decreasing pressure from UHP eclogite to high-pressure granulite suggests that the SDB eclogites exhumed at low speed and underwent strong thermal relaxation at a level of crust-mantle transition or thickened lower crust.

都兰南带榴辉岩折返过程中经历了高压麻粒岩相变质的改造，高压麻粒岩阶段的p-T条件为p=1.9~2.0 GPa，T=873~948℃，并进一步经历了角闪岩相退化变质，说明都兰南带榴辉岩折返速率较慢，发生了壳幔过渡带层次的强烈热松弛。

During construction of our country's ultra-high voltage power grid, both electromagnetic loop circuit and stressed long UHV transmission passage may lead to low frequency power oscillation.

在我国特高压电网建设过程中，高低压电磁环网和重载的长距离特高压送电通道，都可能导致电网发生低频功率振荡。

To ensure the measurement precision of high voltage test,the high voltage test hall should have good shielding system.

为保证高压试验的测量准确度，高压试验厅要求具有良好的屏蔽系统。

The shielding of high voltage hall was analyzed,the key points and measures of shielding design in high voltage hall were introduced.

对高压试验屏厅的屏蔽进行了分析，对高压试验室的屏蔽设计要点及措施进行了介绍。

Combined with the construction example of a high voltage hall,some problems should be paid attention to in high voltage hall shielding design were introduced.

结合某高压试验厅工程实例，介绍了高压试验厅屏蔽设计中需注意的问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。