The critical wind velocity in sloping tunnels will be different from horizontal tunnels due to the stack effect.

在坡度隧道中，由于火风压的作用，临界风速与水平隧道临界风速相比会有一定的差异。

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The air then moves up though the space via the stack effect and is allowed to circulate above interior walls and out through an operable exhaust vent.

然后，空气通过堆栈效应移动，并且可以通过一个排气孔在室内墙壁和外部循环运行。

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The mechanical option makes use of oversized heat exchangers and low power fans to complement the passive stack effect already assisting the air movement in the ducts.

机械通风选项，用大尺寸换热器和低能耗风机来补充由烟囱效应引起的空气流动。

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It has brought Operation Stack into effect - which means more than 2, 300 coastbound heavy goods vehicles can be parked on the M20 motorway.

BBC: Snow causes second day of disruption

With ten-year bond yields still well below 6%, Stack doesn't see the sharp rise in rates as having a dampening effect on equities.

FORBES: Magazine Article

Stack says that many analyses of the market, like Gross', fail to account for the effect of short-term interest rates just above 1%, which he believes make current valuations tenable.

FORBES: Magazine Article