corrugating

His brow corrugated with the effort of thinking.

他皱着眉头用心地思考。

The wind corrugates the surface of the sea.

风吹海面起微波。

He corrugated his brows in throught.

他在沉思中皱起眉头。

Sheets of corrugated iron are often used for temporary roofs and fences.

波纹铁皮常用以建造临时围墙。

According the regulations the corrugated iron sheets lap 10 centimetres over each other.

按照规范瓦楞板需相互迭盖十公分。

It could be concluded that the two-hook corrugated plate outperforms the one-hook when reentrainment is existed.

结果表明，存在次携带情况时，双钩波形板分离效率最优。

Tendril unbranched or bifurcate. Inflorescence usually a polychasium. Seeds elliptic, obovoid-elliptic, or obtriangular, surface smooth, corrugated, or with strumose protuberance or ribs.

卷须不分枝或。常的花序一多歧聚伞花序。种子椭圆形，倒卵球形椭圆形，或倒三角形的，平滑的表面，具皱褶，或具瘤状的突起或肋。

Two patterns of air plane engine inlet hot-air anti-icer are introduced in this paper, one is circumferential anti-icer, the other is double skin corrugated chord direction anti-icer.

摘要飞机发动机防冰对飞行安全具有十分重要的意义，对于热气防冰系统，前缘防冰器的结构型式对防冰的效果影响很大。