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More than 1000 single shell ships of fail-safe system are used everywhere in the world.
安全系数脆弱的一千多艘单壳船，仍在世界各地游弋。
youdao
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The fail safe design for this system are discussed in detail.
重点讨论了系统的故障—安全设计方法。
youdao
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The fail safe design for this system are discussed in detail.
重点讨论了系统的故障—安全设计方法。
youdao