First , engineers could develop low-turbulence rotors .

一是工程师可以研制低紊流转子。

Commander , we 've lost power to the forward rotors . We 're losing altitude .

指挥官，我们旋翼失去动力，正失去高度。

Heavy-transport helicopters , such as the mil mi-26 or sikorsky s-64 skycrane , address some of these difficulties , but their payloads are limited to 20 and nine tonnes respectively , and their huge rotors create a powerful downdraft that makes handling that payload rather tricky .

大型运输直升机，例如米格26或西科斯基s-64可以解决一部分困难，但它们的有效载荷分别只有20吨和9吨，而且巨大的螺旋桨轴产生的强烈下降气流让处理有效载荷变得十分棘手。

Most others use the principle of an underwater windmill whose rotors are turned by the tide .

大多数其他的是利用水下风车的原理，水下风车的转子被潮汐所推动。

Turbulence from the rotors has much less consequence in an already turbulent atmosphere .

风轮转子产生的紊流在已经混乱的大气中产生的影响较小。