换向开关

Hydraulic cylinder piston rod connects gate ,the operation principle of manual hydraulic knife gate valve is that through manually handle , manual- driven hydraulic pump makes hydraulic fluid in the upper and lower chamber of hydraulic cylinder to drive gate opened and closed to achieve valve's open and closed.

手动液压刀闸阀由是由液压缸活塞杆连接阀门闸板，其操作原理手动驱动液压泵手柄把液压油通过手动换向阀压入液压缸的上下腔来带动活塞杆做上下动作，从而带动闸板的启闭来达到阀门开关作用。

In this topology, the main switches are operated under ZVS due to commutation of the transformer magnetizing current and the parasitic drain-source capacitance.

在此转换器，其主要开关主要是利用变压器的激磁电流和开关本身内部的寄生电容的换向，使得主开关操作於零电压的模式底下。

When the reversing switch is on, the reversing portion reverses relationships of connection between the column electrode driving circuit and the column electrodes.

当该换向开关闭合时，换向部分使列电极驱动电路和列电极之间的连接关系换向。

When the reversing switch is on, the reversing portion reverses relationships of connection between the row electrode driving circuit and the row electrodes.

当换向开关闭合时，该换向部分使行电极驱动电路和列电极之间的连接关系换向。

A top-plane side driving portion is structured by a row electrode driving circuit, a reversing portion, and a reversing switch.

顶面侧驱动部分包括行电极驱动电路、换向部分和换向开关。

The backplane side driving portion is structured by a column electrode driving circuit, a reversing portion, and a reversing switch.

背面侧驱动部分包括列电极驱动电路、换向部分和换向开关。

When the upper and down molds stick to each other, the stroke switch will give off signal and the reversing valve will switch and the oil pump will supply oil to the upper cavity of the pressure cylinder.

为满足注射模锁模力的要求，注射合模油缸上部设有增压缸，当模具上下两部分贴紧后，行程开关发出信号，换向阀切换，油泵向增压缸上腔供油，实现对注射合模油缸上腔的增压，达到高压锁模的要求。

In media and high voltage large power multi-level converter systems, integrated gate commutated thyristors are widely used due to its outstanding performance.

新型开关器件集成门极换向晶闸管由于其优越的性能在中高压大功率多电平变流器系统中逐渐得到广泛应用。

Imports of used forklifts for controller, governor, for the switch, integrated hydraulic pump station, walking driving wheel, quality assurance, as a high-quality steel doors-materials, forklifts portal more durable.

采用进口叉车专用控制器、调速器、换向开关、一体化液压泵站、行走驱动轮，质量保证，优质型钢作为提升门架材料，使叉车门架更耐用。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。