以上来源于: WordNet
A combination of several years of work experience in the trade and some high school or college courses in small engine or equipment repair are usually required for trade certification.
通常需要多年的行业内工作经验，以及高中或小型发动机或设备维修的大学课程的组合，才有资格获得行业认证。
VE distributing jet pump is widely used in diesel engine for its light weight, small volume and low cost, but some troubles are also brought for repair because of its poor reliability and endurance.
VE型分配式喷油泵因其重量轻、体积小、成本低等优点而被广泛应用在柴油机上，但又因其可靠性和耐久性差等弊病给用户带来维修上的不便。
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