You should wear hard hats when caving to protect the head from bumps and falling rocks.

Caving means exploring the passages underneath the hills.

洞穴探险运动是指探察山中的通道而进行的活动.

Sublevel caving without sill pillar is used in Xishimen Iron Mine.

西石门铁矿采用无底柱分段崩落采矿法开采.

The whole hotel is decorated with painting, caving and work of art.

屹立在318国道旁,绘画 、 雕塑、艺术品充满整个酒店,空气中充溢着文化与艺术的气息.

With the roof caving in, there were an increasing number of desertions.

由于大势已去, 逃兵的人数日益增多.

Study the automatic system of fully mechanized sublevel caving working face applying neural network control theory.

应用神经网络控制技术对综放工作面自动化系统进行了研究.

Analyses factors that affect cover caving ability of roof coal in sublevel caving mining method.

分析了放顶煤开采顶煤冒放性的影响因素.

He had always wanted to go caving .

他过去一直想探索洞穴。

The calculation on working resistances of supports has been one of key research questions sublevel caving.

支架工作阻力计算是综放开采研究的主要问题之一.

According to CPM buy, CPM enough to be, no matter how long caving, unambiguous.

按CPM购买, CPM够 了才算, 不管放多长时间, 毫不含糊.

Politically, however, they cannot afford to be seen as caving in to foreign pressure.

不过, 在政治上, 他们承担不起被视为屈从外国压力的代价.

The horizontal section top coal caving in steep seam is different from the gently inclined seam.

急斜煤层水平分段放顶煤开采与缓斜煤层不同,工作面沿煤层厚度的水平线布置,长度短.

Some residents are concerned about their roofs caving in.

一些担心他们的房顶有塌陷的危险.

The formation is unstable and the wall caving are severe.

地层不稳定,井壁垮塌严重.

Carbopol 934 P gel is better for cavitary mucosal dru g delivery.

卡波姆934P凝胶剂更适合于腔道给药.

Pulse rate ( frequency ) is optimized in ultrasonic area, generates cavitated action in liquid accordingly.

脉动速率 ( 频率 ) 优选在超声区域内, 借此在液体中出现空化作用.

Cavitation water tunnel is one of experimental facilities studied cavitation phenomenon.

空化水洞是研究空化现象的实验设备之一.

Areas of necrosis and cavitation may occur within the tumor.

肿瘤内可以有坏死和成腔区.

This is the basis of the phenomenon called cavitation.

这就是所谓汽蚀现象的根据.

There is no cavitation damage and issues such as irrigation water.

不存在汽蚀破坏及灌引水等问题.

The supersonic characteristic of hydraulic turbine cavitation was studied in this paper.

本文分析了水轮机空化噪声的谱特性.