海带是一种海洋植物。
It is generally believed that oil is derived from Marine plant and animal life.
通常认为石油来源于海生动植物。
The diagnosis of Marine main propulsion plant is important for ship's safe operation.
船舶主动力装置的故障诊断对船舶的安全运行具有重大意义。
The diagnosis of Marine main propulsion plant is important for ship's safe operation.
船舶主动力装置的故障诊断对船舶的安全运行具有重大意义。
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