在需求时间内元件处于可用状态，但不处于执行规定功能的状态。
必须定期检查大钳尾绳，使其处于良好的备用状态。
Snub lines for the rig tongs must be inspected at regular intervals and be in good working condition.
必须定期检查大钳悬吊绳，使其处于良好的备用状态。
Hanging lines for the rig tongs must be inspected at regular intervals and be in good working condition.
电视机、计算机、空调等不要24小时在备用状态因为一样耗电的。
Don't let the TV, computer, A/C switch on at the stand-by mood 24 hours which is still has power consumption.
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