铁路交叉路口的安全闸正在放下来。
笔者首次把弹簧制动、液压松闸闭式多盘湿式制动器应用到国产车辆上，使制动系统更加简单、安全、可靠。
It is the first time for the hydraulic loose-brake and multi-dish wet brake with spring braking to be used in vehicle made in China, making the braking system more simple, safer and reliable.
本文主要论述了一种煤矿绞车盘形闸安全工作监测报警系统的设计与实现。
The essay mainly discusses a kind of design and reality of the system monitoring safety working of the dish-brake of the coal winch.
为论证当前预应力闸墩的安全性，选取22号坝段预应力混凝土闸墩作为典型对象，采用三维有限元计算方法进行应力复核计算。
22 dam block as a typical object, a stress recheck was conducted to demonstrate the current safety of the pre-stressed pier using a 3-d finite element method.
研究成果，为故障报警与控制提供了保障，报警与控制结合，提高了提升机盘闸制动系统的安全性。
This guarantees the implementation of alarming and controlling when the fault happens. The integration of alarm and control promotes the safety of the hoisting machine disc braking system.
开列正确的操作票是正确倒闸操作的前提和关键，也是变电站及电力系统安全稳定运行的保证。
Formatting accurate operation orders is the premise and key for correct switching operation as well as the guarantee for steady performance of substations and power system.
根据葛洲坝船闸船舶过闸安全的经验教训，对多级船闸船舶过闸安全问题进行初步分析与探讨。
Based on the experience and lessons of lockage safety in Gezhouba Shiplock, the problem concerning lockage safety of multi-step ship lock were analyzed and approached.
根据葛洲坝船闸船舶过闸安全的经验教训，对多级船闸船舶过闸安全问题进行初步分析与探讨。
Based on the experience and lessons of lockage safety in Gezhouba Shiplock, the problem concerning lockage safety of multi-step ship lock were analyzed and approached.
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