If necessary, get a separate survey of the engine of a larger sailboat. A missed engine problem could cost you many thousands later on.

如果必要，对大型帆船的引擎进行单独的检验。一个被漏掉的引擎问题可能会害你之后付出几千美元。

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Test and research work is carried out on engine test bench to survey the effect of gum content in gasolene upon gasolene engine power and harmful exhaust gas emission density.

在发动机试验台上进行了汽油中胶质含量对汽油机动力性和有害气体排放浓度影响的试验研究。

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