Motor upper and lower guide bearing wear limit, to replace the bearings, rotor shaft eccentric wear limit, to replace bushings;

电机上下导轴承磨损极限，要更换轴承； 转子上下轴套偏磨极限，要更换轴套；

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When the wear of the carbon brush reaches to the limit, the wear limit alarm device can timely remind the user of replacing the carbon brush, so the non-normal damage of the machine is avoided.

本实用新型在碳刷磨损达到 极限时，可以及时提醒用户更换碳刷，避免了机器非正常损坏。

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Obviously no one expects that women will stop dressing up in heels altogether, but if you limit the amount of wear time and the heel's height you're, um, taking a step in the right direction.

显而易见没人会期待女性完全放弃高跟鞋，但是如果控制你穿写的时间以及鞋跟的高度，你就正在向着正确的方向迈进。

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Southern California Edison wants to change the plant's federal operating rules to permit the Unit 2 reactor to run at no more than 70 percent power, which company engineers and consultants believe will limit unusual tube wear.

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Forecasters say people should limit outdoor activity during the hottest portions of the day, wear lightweight clothing, drink plenty of water and be watchful for signs of heat exhaustion, which include heavy sweating, pale and clammy skin, weak pulse, fainting and vomiting.

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Many scientists believe there is a set limit to lifespan because the body's organs and tissue begin to wear out at a steady rate over time.

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