... spiral model螺旋模型;螺旋模式;螺旋模子;螺旋式 Knowledge Spiral知识螺旋;螺旋作用 placental spiral胎盘螺旋钻 ...
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螺旋桨作用 Action propeller
对螺旋桨整流作用线形 contra-propeller fairing
螺旋体溶解作用 spirochetolysis
逆作用螺旋 Reverse-acting spiral
昆虫不育技术在桑给巴尔根除采采蝇过程中以及其他国家防控螺旋锥蝇过程中发挥了关键作用。
SIT has played a vital role in the eradication of the tsetse fly population in Zanzibar and in the control of screwworms in several countries.
随着带病毒蜱虫附着人体时间增加，莱姆螺旋体感染几率也随之提升(24小时0%，48小时12%，72小时79%，96小时则高达94%。)幼虱作用人体约需30小时，成虫仅需10小时，幼虱约是成虫的2倍。
The probability of transmission of Lyme disease spirochetes increases the longer an infected tick is attached 0% at 24 hours, 12% at 48 hours, 79% at.
立方直升机的这种配置让他可以像直升机一样盘旋，但在向前飞行时，主旋翼的转速可以将下来，让两侧的机翼提供升力，在此情况下，两台螺旋桨推进器就能发挥大作用了。
This means it can hover like a helicopter, but when flying forwards can reduce the speed of the main rotor and let the wings provide part of the lift. Its propellers give the extra oomph.
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