结果表明：长期搁置后的蓄电池在使用前进行几次充放电循环，其有效容量和综合性能明显得到提高。
The experimental results showed that, before practical application, the initial capacity and comprehensive performance of stored battery can be obviously incr eased after some charge-discharge cycles.
它应用新的工作原理 和结构设施，提高了车用轮胎的综合承载能力和安全性能。
The rubber tube tyre adopts novel working principle and structural facilities, and improves the comprehensive bearing capacity and the safety performance of the vehicle tyre.
现役飞机的加改装或改型，是赋予装备新功能、提高装备性能和综合战斗力的一条快速、有效的途径。
Modification of active aircraft is an effective and quick approach to endow it with new functions or to raise its performance and fighting capacity.
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