a large cave or a large chamber in a cave.
巨大的洞穴或洞穴中的巨大堂室。

a concave molding with a cross section that approximates a quarter circle
截面近于九十度弧的凹线脚

STABILITY ANALYSIS OF ABANDONED SALT CAVERNS USED FOR UNDERGROUND GAS STORAGE
废弃盐穴地下储气库稳定性研究

The paper introduces a kind of blasting cave which is used for destroying abandon explosive materials.
介绍了一种用于销毁废弃爆破器材的爆炸硐室。

segments slightly concave adaxially, cucullate, slightly succulent near apex abaxially, 3veined.
正面的裂片稍凹面, 兜状, 稍肉质近先端背面, 3脉。

The surfaces of the concave lens may be proportioned so as to aberrate exactly equal to the convex lens.
凹透镜的表面可以进行均匀处理，以便使像差完全与凸透镜一致。

aberration of the concave mirror is reduced by a meniscus lens.
用半月板镜头减少凹透镜的过失。

Research on the Ability to Scavenge Free Radical of Tremella Polysaccharide
银耳多糖的提取及其清除自由基作用

How to Raise the Ability of Resisting Cave Corrosion on Marine.
如何提高船用柴油机气缸套的抗穴蚀能力。

Under close questioning, the wretched man caved in abjectly and confessed all his misdemeanours.
在逼问下，这个家伙无望地招供了，承认了他的所有不端行为。

We activate this New Year with abject activity and biconcave optimism.
我们在信念有余和不敷乐观中，迎来了新的一年。

A small, humble abode, such as a hermit's cave or hut
小的隐居处所狭小、简陋的住所，比如隐士的山洞或棚屋

The treatment of rhinogenous cavernous sinus infection and abscess
鼻源性海绵窦感染与化脓的处理

With the aid of this faint light, he found it absolutely empty around the cave.
他借着这一点亮光，看看这洞穴的四周，空空荡荡的。

The axial lower section of the hemisphere case is equipped with the absorption cavity which connects with the segmental concave cavity.
半球壳体轴向下部设有连通圆缺凹腔的吸收腔。

Abstract Objective To put forward anatomy parameter about the cavernous sinus for microneurosurgery.
文摘目的为海绵窦显微外科手术提供解剖学参数。

These mountains strange enough, and countless abstruse magnificent caves more bizarre
这些山已经够奇了, 而无数的深邃瑰丽的岩洞更奇

Abney mountin for concave grating
阿布凹面光栅装置

How Aladdin and Abu got out of the cave ?
阿拉丁和阿布是怎么逃出那个岩洞得?

Teaching Aproaces of Lushan National University and White Deer Cave Academy
庐山国学和白鹿洞书院的教学方式

In his late years, he lived in Lotus Cave on Lushan Mountain and set up Lianxi Academy where he gave lectures and planted lotus.
老年末年定居庐山莲花洞并创立濂溪学塾讲学，植荷。

The cave is difficult of access.
这山洞很难进去。

This is the only access to that cave.
这是进入山洞的惟一通道。

The easily accessible river cave is a popular attraction.
那容易接近的河穴是一处受欢迎的有吸引力的。

We lighted on a stone cave quite by accident.
我们十分偶然地发现了一个石窟。