In motion with a fixed frictionless constraint, no work is done by the constraint.

Precise alignment along the bore produces a frictionless movement and long sensor life.

沿钻孔精确的校准产生无摩擦的运动和长传感器寿命.

It turns so smoothly that it will seem frictionless to any student standing on it.

因为它几乎无摩擦力所以当学生站在上面时可以很容易的转动.

Pulley bearings are frictionless.

滑轮轴承是无摩擦的.

There is a frictionless hinge at C.

C点是无摩擦铰.

A perpetual motion machine would have to be frictionless.

永动机只能是一种无摩擦力的机器.

Passing through blades, with the actions of the frictions, high velocity will decrease a little bit.

蒸汽通过叶片时, 由于摩擦的作用其速度稍稍降低.

Trade protectionism is gaining ground, resulting in heightened trade frictions.

贸易保护主义有所抬头, 贸易摩擦加剧.

The plan is likely only to aggravate ethnic frictions.

这一方案很有可能只会加剧种族冲突。

Family frictions can interfere with a child's schoolwork.

家庭中的争吵会影响孩子的学业.

It takes concerted efforts to address their economic and trade frictions.

解决中美经贸摩擦等问题需要双方共同采取行动.

Of course, one should not exaggerate these frictions either.

当然, 人们也不应夸大这些摩擦.

For an externally-dependent Chinese economy, trade frictions are the last thing it needs.

对依赖外向型的中国经济, 贸易摩擦最终会来的.

However, obstacles also exist in the Sino-European cooperation, and trade frictions appear continually.

但是, 中欧经贸合作也存在不和谐音符, 贸易摩擦时时出现.

Akerlof is an expert on frictions in consumer and employment markets.

阿克洛夫是“消费者冲突”和“就业市场”方面的专家.

That could weigh on growth, and intensify frictions over trade.

这可能会拖累经济增长, 并加剧贸易摩擦.

Trade frictions with the rest of the world are hotting up.

中国与外部的贸易摩擦日趋增加.

Needless to say , there will be some frictions in the course of fast growth.

在中美经贸合作快速发展过程中, 难免会出现一些摩擦.

The fridge door was open and food was scattered across the floor.

冰箱门开着，食物散落在地板上。

Why did parents put their son in fridge?

为什么父母把儿子放进冰箱里?

The stove and the fridge are in good working order.

炉灶和冰箱都很好用.