The pressure meters can give the switch signals of up limit pressure and down limit pressure of water supply.

压力表可发出供水压力下限和上限开关信号。

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According to this logic, the way to increase efficiency end drive down unit costs is to limit product variety and produce a standardized product in large volumes.

据此逻辑，提高效率而压缩单位成本的方法就是限定产品种类，并且进行标准化批量生产。

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Some properties allow you to enter free text, but others provide a more appropriate interface; the property for the layout manages USES a drop-down list to limit you to valid layout managers.

一些属性允许您随意地输入文本，但是其他属性则提供一个更为合适的接口；针对布局管理的属性使用一个下拉列表，使您只能在有效的布局管理器中进行选择。

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For them, an eleventh-hour attempt to pay down debt won't stop their card companies from paring down their credit limit anyway.

FORBES

If approved, the new limit up-limit down mechanism would replace the existing single stock circuit breakers, which were approved on a pilot basis shortly after the market events of May 6, 2010.

FORBES: Proposal to Address Extraordinary Market Volatility

In December, 145, 867 drivers were tested and 9, 658 - 6.6% - were over the limit, down from 6.9% in December 2005.

BBC: A police officer holding a breath test kit