natural obstacle

Study on Solving the Problem of Obstacles in Land Grading by Combining the Shortest Path Algorithm and GIS;

利用最短路径算法结合GIS解决土地定级障碍物问题的研究

By via of applying self-designed experimental system for flame acceleration and choosing five different solid structure obstacles,the paper investigated solid structure obstacles effect on flame speed and overpressure of premixed methane.

通过运用自行设计的火焰加速系统,文章研究了立体结构障碍物对预混甲烷火焰传播过程中火焰传播速度和超压的影响。

In the present study,the CFD code AutoReaGas was used to provide a quantitative description of the effects of obstacles and gas concentration on explosion overpressures field.

利用计算流体动力学软件AutoReaGas,定量地研究了障碍物和瓦斯浓度对管道中瓦斯爆炸超压场的影响。

The cable system is ideal for spanning natural barriers of wide rivers, deep valleys, or ravines.

这种钢索体系是跨越宽河道、深丘谷或深山谷天然障碍物的理想体系。

stopped at the curB, then crossed over.

在障碍物前停下，然后越过去

Reform of the European Natural Gas Market: Current Status, Obstacles and Future Prospects;

论欧盟天然气市场改革:现状、障碍和前景

Price Should Not be an Obstacle to LNG Development in China;

价格不应成为中国液化天然气产业发展的障碍

Effect of Aluminum on Rat's Memory and Intervention of Antioxidant Plant;

慢性铝暴露大鼠记忆功能障碍及抗氧化类天然植物干预作用的研究

The absence of obstructions is of course an idealization.

没有障碍物的情况当然是一种理想化的情况。

A land hazard or bunker on a golf course; a sand trap.

障碍高尔夫球道上的一个障碍物或障碍；高尔夫球道上的沙土障碍

Technical breakdowns are still too numerous.

技术上的障碍仍然太多。

congenital aplastic anemia

先天性再生障碍性贫血

Knock down: To cause any part of an obstacle to fall.

碰倒障碍：使障碍物的任何一部分下落。

Everything, it said, was against the travellers, every obstacle imposed alike by man and by nature.

根据这篇文章的论点，旅行者会碰到很多人为的和天然的障碍。

Those obstacles must be removed.

那些障碍物必须除掉。

She urged her mare to jump the fence.

她策马跳过障碍物.

radio wave diffraction propagation over obstacles

障碍物电波绕射传播

be hemmed about by obstacles

被障碍物团团围住.

The entrance is clear of obstruction.

这入口没有障碍物。

restriction of obstacle around airport

飞机场附近障碍物限制

I saw an obstruction in the road.

我发现路上有一障碍物 。