The flight phase: As an athlete moves through the air, his leg swings backward and then moves rapidly forward.
腾空阶段：当运动员在空中移动之时，他的腿先向后摆动，然后迅速向前移动。
So, the action of extending the leg backward creates a forward and upward movement (the flight phase).
因此，腿向后伸展的作用力，产生一个向前向上的运动(腾空阶段)。
Two phase countercurrent flow in reactor hot leg at loss of coolant accident is studied by experiment and analysis.
对反应堆失水事故条件下热管段内的两相流逆向流动过程进行了实验研究和理论分析。
Three-phase four-leg inverter is used in the inverter link to improve the adaptability of the system because loads in distributed generator are uncertain.
针对分布式发电系统负载的不确定性，为提高系统的适应性，文中在逆变环节采用四桥臂逆变器。
The neutral voltage of the three-phase four-leg inverter employed in UPS is desired to be very low.
当三相四桥臂逆变器用于UPS时，要求其中线电压很低。
This paper presents a decoupled control scheme for three?phase four?leg inverter through an inner current regulator based on space vector cascaded with an outer synchronous frame PI controller.
该文提出了一种采用内环空间矢量电流调节器和外环同步坐标比例积分控制器相级联的三相四桥臂逆变器的控制方案，实现了对三相四桥臂逆变器的解耦控制。
Water displacement of the right leg was measured at baseline, after Phase 2, and after Phase 3.
在基线、第二阶段后、第三阶段分别测量右腿的水置换效果。
Phase - shifted converter realizes zero - voltage - switching with the use of leakage inductor of the main transformer, however, the realization of ZVS for lagging bridge leg is difficult.
移相控制全桥变换器能够实现开关管的零电压开关，但滞后桥臂难度很大。
Phase shifted converter realizes zero voltage switching (ZVS) with the use of leakage inductance of the main transformer, however, the realization of ZVS for lagging bridge leg is difficult.
移相控制全桥变换器能够实现开关管的零电压开关，但滞后桥臂难度很大。
The PWM control strategy with 3-th harmonic in addition is presented for four-leg three-phase inverter, the inverter can deal with unbalanced load and has a high utilization of dc bus voltage.
本文将三次谐波注入的PWM控制方案应用到四桥臂三相逆变器中，可以带非对称负载且具有较高的电压利用率。
A discrete and nonlinear mathematical model of three-phase four-leg inverter is built up with the switch state functions based on the analysis of its working modes.
在分析三相四桥臂逆变器工作模态的基础上，引入开关状态函数建立了四桥臂逆变器系统离散的、非线性的数学模型。
This dynamic voltage regulator employs a two-leg inverter for three-phase three-wire systems.
提出了一种适用于三相三线制不平衡系统的任意次谐波电流检测方法。
This dynamic voltage regulator employs a two-leg inverter for three-phase three-wire systems.
提出了一种适用于三相三线制不平衡系统的任意次谐波电流检测方法。
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