跟着车回到了鲁朗镇，没多久，幸运搭上了第五辆车，是一辆前往波密的光缆维护工作用车，车上坐着一位大哥和一位小伙。

With the car back to the town of lu Lang, not long, lucky to catch a fifth car, is a cable to Bomi maintenance work car, the car sitting on a big brother and a guy.

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介绍了在解放牌CA150P等车型汽车上采用的弹簧制动缸的结构、工作原理、主要参数，以及使用、维护方法。

This paper describes a spring brake chamber used in Jie Fang model CA150P and other trucks, its construction, working principles, main parameters and instructions of its operation and maintenance.

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性能测试表明起动性能良好，在机车上的使用寿命预期比原有电池提高一倍左右，且无需维护。

The estimated service life of this battery in diesel locomotive was about twice as long as that of its original battery, and it was maintain-free.

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