The assembly shall consist of two positive seating check valves located between two resilient seated shutoffs with a hydraulically balanced bypass line and four test cocks .

这种总成应该由两个正向密封止回阀， 两边夹着两个弹性阀座关闭阀， 并配置一个液压平衡旁路管线和四个测试旋塞构成。

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Check quantity and cleanliness of glasses, two old fashion, two highballs, two wine glasses.

检查杯子的数量和清洁程度，两只古典杯，两只高杯，两只红酒杯。

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Methods Two groups with or without symptoms of CHD were taken VCG and ECG check respectively to compare the detective rate of abnormal items between the two groups.

方法选择有冠 心病症状和无冠 心病症状的两组人群，同时进行 心 向 量 图和 心电 图的检查，以比较它们诊断 心肌缺血异常项目的检出率。

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The random 18-digit code plus two check digits will have a four-digit prefix added and it will have intelligence in it.

FORBES: America's Attempted Domination Of LEI Slams into FSB Wall

Atkins claimed that after a year he could examine and cross-check two files at once, but you never saw him try to do it, though he could whistle one song and hum a different one.

NEWYORKER: Wiggle Room

Glyph also enables users to check in to venues via the app, where they can then push their checkins to Facebook and Foursquare, two popular location-based check-in platforms.

FORBES: Check In to Maximized Credit Card Rewards With Glyph