Camp sites are usually situated along the coast, close to beaches.野营地一般都位于海滨，靠近沙滩。This was situated to the north-west of the town, a short walk from the railway station.这里地处镇子的西北方，离火车站仅有一小段步行距离。His hotel is situated in o...
角动量守恒定律,可以用回转器来演示.The law of conservation of angular momentum may be demonstrated with a gyroscope.本文叙述应用回转器的振荡电路的原理与实践.The principle and the practice of an oscillation circuit using a gyrator are discussed.运用回转器—电容模型可以很...