They are used for connecting the sluice of the three - gorge dam and the gantry or disconnecting them 该液压系统为三峡大坝泄洪闸实现与门机联接或脱开的系统。
Our company developed various kinds of many kinds of products , such as door machines , flexible door machines , etc 。我公司先后开发了各种卷门机伸缩门机等多种产品，产品畅销全国各地。
The control system of the crane has been transformed from relay control into plc control , and formed compobus / d net 门机的控制系统由继电器控制改为plc控制，还组成了compobus / d网络。
The system presents by using for a period time after reformed that whole design is feasible and reliable 改造后的门机通过一段时间的使用表明，系统整体设计合理，功能齐全，实现了预期的目标。
As a sino - foreign joint venture , jielong rolling screen machine and electricity factory was founded in 1988 本公司创建于1988年（原系中外合资企业） ，是专业生产电动卷门机系列产品的实业公司。
A division of tyco international ltd . provides electronic security systems , fire protection , detection and suppression systems , sprinklers and fire extinguishers -生产平开门机，平移门机，别墅开门机等产品。
The author has a whole design of the scheme of m10 ton portal crane . the software used by control system in ladder is also given in this article 对m10t门机的总体改造方案进行了设计，并用梯形图编写了系统控制软件。
The fourth part concentrates on the crucial section , dock crane , and establishes a model to allocate dock cranes , and gives a solution 第四章围绕研究的主要目标，抓住系统中的中心关键环节? ?门机，利用解乘数法，建立和求解门机分配模型。
Standard rolling door uses gear brake motor to drive . track and sill is specified designed as structure of door ; frame . it is widely used in large stteel - structure building 普通卷帘门采用专用卷门机驱动，导轨和底梁按照建筑物门框的形式单独设计，可广泛应用于大型钢结构建筑物。
