人的手掌是微凹的。

The palm of one 's hand is slightly concave .

蹄锋利，呈凹形，富有弹性。

The cloven hooves are sharp edged , elastic and concave .

书架正好放得进壁凹。

The bookcase fits neatly into the alcove .

小路尽头的岩石上有一个凹洞。

There was a niche in the rock where the path ended .

舷边甲板下面的一个凹处放了一个小小的洗脸盆。

Set into an alcove under the side deck is a tiny wash basin .

大卡车从他们身旁轰隆隆开过，把路上坑凹里的脏水溅到了他们身上。

Lorries rumbled past them , splashing them with filthy water from the potholes in the road

他的眼睛[面颊]凹下去了。

His eyes [ cheeks ] have sunk in .

那种金属同酸接触后是否会起凹点？

Does that metal pit after contact with acid ?

汽车的发动机罩已凹了进去。

The car hood was dented in .

路凹下去了。

The road caved in .

我们判定它是拟凹的。

We conclude that it is quasi-concave .

床中间凹下去了。

The bed sags in the middle .

车被严重撞凹。

The car was badly dented .

这凹进去的地方有一张长沙发。

The alcove held a couch .

早在17世纪，艾萨克.牛顿就开创性的利用这个光，让凹透镜产生了一个图像。

A concave mirror creates an image from this light using a design pioneered in the17th century , by Sir Isaac newton .

凹型壁面对碰壁喷雾有聚集作用。

A curved-inwards wall has a convergent effect on wall spray .

小溪流的回声在巨大而突出的凹壁中回荡

Tiny streams echo in enormous overhanging alcoves .

这位上校样子挺神气，他的嘴巴、双颊和两眼都深深地凹进去，目光黯淡，象发了霉似的

The colonel was gorgeous , he had a cavernous mouth , cavernous cheeks , cavernous , sad , mildewed eyes .

K空间中一类凹与凸算子的不动点

The fixed point of concave and convex operation in K space

预应力组合凹模的CAD

CAD of a Combination Concave Model Tool with Prestressing Force

V形件弯曲变形过程分析及弯曲凹模深度的计算

Analysis of forming process for V-shape bending and calculation of die depth

V型7只眼：黄斑中心凹较陡；

V - type ( 7 eyes ) with steep foveal contour ;

一致U0-凸算子与一致U0-凹算子的一个注记

A remark for the uniform U_0-convex operator and the U_0-concave operator

MRI对于显示肿瘤颅内和颞凹蔓延，优于以上检查方法。

MRI was better than any other methods in displaying intracranial and temporal fossa extension .

基于ANSYS分析的组合凹模优化设计

Optimal design of combination female die based on ANSYS

128×128凹型GaAs微透镜阵列器件的制作研究

Research on Fabrication of 128 × 128 Element GaAs Concave Microlenses Array Device

在平凹腔Nd：YAG激光器中Cr~（4+）：YAG被动锁模的特性研究

Investigation on Characteristics of Cr 4 + ∶ YAG Passive Mode Locking in a Nd ∶ YAG Laser with a Plane concave Cavity

Chiari畸形后颅凹形态学的临床研究

The clinical study on the morphology of posterior cranial fossa in Chiari malformation

介绍了24例后颅凹肿瘤伴有脑积水患者采用坐位手术时，于术前2～3d行脑室外引流的作用与方法。

The authors introduced the method and effects of ventricle drainage which was carried out 2-3 days before tumor removal in sitting position for 24 cases of posterior fossa tumor with hydrocephalus .

GM平均胸径还与坡位正相关；GM数量沿N→S的坡向梯度减少，而随坡度增大及坡形由凹转凸而增加；

The number of GM decreased as the slope exposure turned from N to S , as slope increased , and as slope shape turned from convex to concave .