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- The combination of FFT with forward and backward whirls can give a more decisive diagnosis. 系统还保留了频谱分析功能，测试的各阶频谱分量，可与正反进动量相辅用于故障的监测、诊断。
- For detecting unbalance and rotor/stator rub, 1x, 2x and 3x forward and backward whirls arc the optimum signature signals. 对于诊断不平衡和转静碰摩故障，一、二和三阶正、反进动量是最适合的故障诊断特征量。
- She rushed out of the house into a whirling snowstorm. 她冲出屋子走进了狂卷着的暴风雪中。
- He lined out for home without a backward glance. 他头也不回，急忙往家里走去。
- My head's in a whirl; I must sit down and think. 我的脑袋一片混乱，我得坐下好好想一想。
- The strong medicine made my head whirl. 这种烈性药使我头晕眼花。
- This part of the country is still backward. 这个国家的这个地区仍很落后。
- In some cities housing conditions went backward. 某些城市的住房条件越来越差。
- The teacher was patient with backward children. 那位老师对迟钝的学童十分耐心。
- He looked backward over his shoulder. 他回头向后看。
- The colorful whirl of the dancer is beautiful to watch. 舞蹈者多彩多姿的旋转令人赏心悦目。
- I've never eaten squid before, but I'll give it a whirl. 我以前从没吃过鱿鱼，不过我想尝一尝。
- backward whirling 反向涡动
- My mind is in a whirl with all this noise, I cannot think clearly. 这么吵闹搞得我头脑里一片混乱，思维不清晰。
- Michaelangelo is the master of the whirling nunchakus. 米开朗基罗是耍双节棍的高手。
- She looked backward over her shoulder. 她回头往後看。
- I couldn't sleep: my mind was still whirling from all I had seen and heard. 我睡不著觉，所见所闻仍在头脑中转来转去。
- Sheila is very clever but rather backward in expressing her ideas. 希拉很聪明，然而在表达思想时却有些腼腆。
- Although he is clever, he is backward in giving his views. 他虽然很聪明，却不善发表他的意见。
- Her life was a whirl of cocktail parties and dinner dates. 她的日子几乎全是在一连串的鸡尾酒会和宴会中度过的。
