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。
2
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。
3
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.