I unknotted the handkerchief, and commenced dropping them in from an angle, and the flame curled up the chimney.

我解开手绢，开始把它们从手绢角里向外倒，火焰卷上了烟囱。

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Cooling is needed when temperature of driveshaft is over 60? C, judging by frequency dropping or rotating Angle increasing to end the test.

轴温度超过60度将进行冷却，由载荷决定试验终止，通过频率下降或转角增加终止试验。

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Although the shear strength of frozen clay is only increasing with the temperature decreasing, there is a tendency that the angle of internal friction is dropping with the lowering of temperature.

无论何种试验加载方式，冻结粘土的剪切强度都与围压关系不大，只随着温度的降低而增大，而内摩擦角则有随着温度的降低而减小的趋势。

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