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Based on the power series expansion of the general flexible matrix of the sub-system, a general expression of the dynamic stiffness matrix of the reduced model was derived from the exact expression of the reduced model for the direct substitution dynamic condensation methods. The general expression was also expressed as a power series of the unknown eigenvalues. After that, the validity and error of the Guyan condensation method were analyzed.

对于动力缩聚直接代入法，本文从降阶模型的精确表达式出发，利用子系统广义柔度矩阵的幂级数展开式，导出了降阶模型动刚度矩阵的一般表达，并把它表示为未知特征值的幂级数形式，在此基础上对 Guyan缩聚法的适用范围和误差进行了一般分析。

When the gas is heated, because it is in a sealed chamber, the pressure rises and this then acts on the power piston to produce a power stroke.

当气体被加热，因为它是在一个密封的房间，压力上升，这对当时行为的权力活塞产生动力中风。

The developed model can be used on studying the power electronic transistor but also the power LEDs circuit.

这是一个重要的示范，显示出未来磁、光、电整合的应用元件将会在科技生活扮演重要角色。

Vacuum switch is the key equipment in power system and is used to turn-on and disconnection power system. At the same time it should protect and monitor many kinds of faults.

真空开关是电力系统中的关键设备，用于接通、分断电力系统同时对各种故障进行保护监控。

An analog control, in accordance with corresponding changes in the load modulation transistor gate of the base or bias, to achieve the output transistor switching power supply or transistor turn-on time of change in this way can the power supply output voltage in the workplace Conditions of constant change.

一种模拟控制方式，根据相应载荷的变化来调制晶体管栅极或基极的偏置，来实现开关稳压电源输出晶体管或晶体管导通时间的改变，这种方式能使电源的输出电压在工作条件变化时保持恒定。

Compared with hard-switching inverter, the soft-switching inverter's power swatches turn-on at zero voltage or zero current conditions, zero switching losses in theory, which can improve the efficiency of the system and device power density, reducing the system electromagnetic interference and ensure a brushless DC motor performance and reliability.

与硬开关逆变器相比软开关逆变器的功率开关在零电压或零电流条件下导通，理论上开关损耗为零，从而可以提高系统的效率和装置的功率密度，减小系统的电磁干扰，保证了无刷直流电机的性能和可靠性。

Artificial Neural Network method was used to improve the solution of power electronic devices during application design, and to analyze the nonlinear relationship between the periphery circuit parameters and the switching characteristics of large capacity GTOs (Gate Turn-off thyristors), including power losses, turn-on and turn-off times, and the rise rate of device voltages and currents. ANN training error was ±5%approximately.

为便于器件的设计选型，根据已有实验数据，采用人工神经网络建立了外围环境参数和大功率门极自关断晶闸管开关特性（包括损耗特性、开通和关断时间、电压和电流的变化率等）之间的非线性关系，训练误差范围为±5%。

In China,procuratorial power and administrative power own equal status on constitution level.

在我国，检察权与行政权具有同等的宪法地位。

In China, procuratorial power and administrative power own equal status on constitution level.

通常意义上，在我国，行政权是指一定的行政主体依照宪法和法律所拥有的管理政治、经济和社会事务的权力。

The article is mentioned about Warehouse Information System which has been realized in a power plant propitiously, it pointed out the combination of wireless network and barcode will show great potential on material management in power plant.

然后把pointed前面的which改成it代指article要好点，这样就会通顺些了意思应该是：这篇文章提及到一种已经在发电站得到实现的仓库信息管理系统，文章指出无线网络与条码的相结合会在发电站的材料管理中体现出更大的潜力。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。