考虑被压实物料的不对称滞回特性，建立了振动压路机振动轮-车架系统的二质量运动模型。

A two-mass model of the vibration compacting roller and its frame is established with consideration of materials asymmetrical hysteresis.

youdao

妇女解放运动为妇女开辟了新的职业机会。因此，随着时间的推移，一些女性人才逐渐不把教师纳入职业选择范围内，导致了教育质量的逐步下降。

Women's liberation opened up new professional opportunities for women, and, over time, some of the best left teaching as a career option, bringing about a gradual decline in the quality of schooling.

youdao

然而，他们的重点并不是有氧运动，而是负重训练项目，旨在培养主要客户男性健身爱好者的培养肌肉质量、力量和耐力等。

However, their focus was not on aerobics, but rather on weight-training programs designed to develop muscular mass, strength, and endurance in their primarily male enthusiasts.

youdao

If a photon which has no mass can behave as a particle, does it follow then an electron which has mass can behave as a wave? 1920.

如果一个没有质量的光子,能像粒子一样运动，那么它能像一个,没有质量的电子那样以波的形式运动吗。

麻省理工公开课 - 固态化学导论课程节选

If a photon, which has no mass, can behave as a particle --And we know this.

如果一个没有质量的光子，像粒子一样运动--，我们知道这个。

麻省理工公开课 - 固态化学导论课程节选

And know intuitively that if they move together, they will behave like an object of mass 5 and the acceleration will again be 2.

凭直觉认为既然它们一起运动,那么它们就相当于一个质量为 5 千克的物体,然后我们可以算出加速度为 2

耶鲁公开课 - 基础物理课程节选