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The principle of an emergency release system used in oil-pipeline was introduced.
介绍了一种油品输送管道用紧急脱离装置的工作原理。
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Step 5: Look for an emergency exit or emergency door release switch.
寻找紧急出口或紧急开门按钮。
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Step 5: Look for an emergency exit or emergency door release switch.
寻找紧急出口或紧急开门按钮。
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