The Wankel-type rotary engines are very reliable because of their simplicity.
汪克尔式转子发动机结构简单，非常可靠。
It is also generally conceded that Wankel engines are quieter than comparable piston engines.
转子发动机比通常的活塞式发动机噪音小也是大家所公认的。
The design of millimeter-scale rotary engine(Wankel) was introduced, which is quite different from large-scale engine's parts design and manufacture.
介绍了毫米级微型转子发动机（汪克尔类型）的设计，其在各零部件的设计、加工上和大尺寸的转子发动机存在很大的不同；
The design of millimeter-scale rotary engine(Wankel) was introduced, which is quite different from large-scale engine's parts design and manufacture.
介绍了毫米级微型转子发动机（汪克尔类型）的设计，其在各零部件的设计、加工上和大尺寸的转子发动机存在很大的不同；
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