Modern ships use the electromagnetic Log have been less.
现代船舶上使用电磁计程仪的已较少。
Modern ships can be divided into several and each has a very high performance requirements.
现代船舶可分为多种，并且各自都有很高的性能要求。
Modern ships can be divided into several and each has a very high performance requirements.
现代船舶可分为多种，并且各自都有很高的性能要求。
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