The countryside undulates pleasantly.

原野起伏，景色宜人。

This wooden sky rises, undulates and tightens.

这个木制的天空升起，起伏和收紧。

Actually is the light essence the granule or undulates.

光的本质究竟是粒子还是波动。

The flaking do increases and undulates the fatigue crack growth rate.

钢中的白点能增加疲劳扩展速率并使扩展速率发生波动。

This draws a waving colored flag, that undulates its way around the screen.

绘制一面飘展的彩旗，在屏幕上四处飘动。

The price of steel and iron products and materials undulates fiercely on the current market.

当今的市场，钢铁产品和原材料的价格上下波动剧烈。

The seemingly repetitious simplistic form is actually one continuous surface that undulates to carve spaces underneath it.

看似简单重复的形式实际上是一个连续的表面，在起伏中分割其下方的空间。

The water source water temperature undulates slightly; the operation of unit is more stable, the Energy efficiency is better.

水源水温波动小，机组运行更加稳定，节能效果更佳。

Therefore, the research coal supply chain price undulates and forms the mechanism, has the important theory and the practical significance.

因此，研究煤炭供应链价格波动及其形成机制，具有重要的理论与现实意义。

In east Sichuan, surface condition is very complicated, landform undulates terribly, and the cropped anticline mostly consists of Permian and Triassic carbonate rocks.

川东地区地表条件极为复杂，地形起伏大，构造顶部多出露二叠系、三叠系碳酸盐岩。