The cold wind from Lake Baikal is blowing hard.从贝加尔湖吹来的冷风在呼啸.Commercial fishermen catch three main types of fish in Lake Baikal.在贝加尔湖,商业捕鱼人员主要捕获三种类型的鱼.Lake Baikal is something of a miracle to the Russians.对俄国人来说,贝加尔湖颇有些神...
节制: 食不可过饱, 饮不得过量.Temperance: Eat not to dullness; drink not to elevation.人们体重经常是因为吃得过饱而增长.可是为什么会吃过饱 呢 ?People usually gain weight because they overeat, but what makes them overeat?总是吃得过饱不利于健康.It is not good to our health...
The Doppler frequency can be obtained as a heterodyne or beat effect.由于外差或频差效应,能够得到多普勒频率.The doppler frequency is a function of the two scattering directions.多普勒频率是两个散射方向的函数.Doppler - sonar is a dead - reckoning system.多...