Discusses several representative equations of point source plume. Establishes calculating equations of thermal stratification height, ventilation rate and neutral level based on a two-zone model.

讨论了几个典型的羽流流量计算公式，结合一种二区自然通风模型，建立了热分层高度、通风量和中和界高度的计算式。

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One is referenced on the polarizer's azimuth and the other is a two-zone online correction method based on polarizer rotation.

在此基础上，提出了基于起偏器方位角的系统误差标定方法和旋转线性偏振器消除系统误差的在线校正方法。

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Since last year's inauguration of conservative South Korean President Lee Myung-bak who North Korea calls a "traitor" North Korea has restricted access to the zone, detained a South Korean executive for more than two months without trial, and cancelled all of the contracts governing rent and wages.

VOA: standard.2009.06.05

Zone two and zone three boarding are for everybody else, with people at the rear of the aircraft boarding ahead of people in the front of the aircraft.

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City are four points above the League Two relegation zone in 19th, having accrued just 13 points this season.

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That increased risk for post-flight disease doubled to 7.7% for passengers seated in a two-seat hot zone.

WSJ: Where Germs Lurk on Planes