Helicopters are limited in their forward speed by the spinning rotor blades that make hovering possible.
直升飞机那不停转动的旋翼叶片使其能够在空中悬停,但却限制了它向前的飞行速度。
Some key techniques on spinning, knitting and dyeing of sea-island fiber knitwear are discussed. The problems and prospects of developing sea-island fiber are put forward.
着重介绍了针织用海岛纤维纺、织、染生产过程中的一些技术关键,对海岛纤维开发中尚存的问题及应用前景提出了自己的见解。
This paper introduces the application of VT230S frequency converter in nylon spinning, analyses the problem while debugging and brings forward solution.
介绍了VT230S变频器在尼龙纺丝中的应用,分析了调试中的故障现象及对策。
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