详细解释
凹
1、周围高,中间低。
其湖无凹凸,平湖无高下。---《神异经·北方荒经》
凹岸;凹面;凹洼：凹陷
凹地;凹处
例句
他的胃是凹的。
He has a concave stomach.
由于这是一个凹函数，它不仅仅是期望值。
Since this is a concave function, it's not just the expected value.
人的手掌是微凹的。
The palm of one's hand is slightly concave.
通过从探测器的舱室中提取水分，探测器表面形成一个凹半球。
By extracting water from the detector's chamber, the detector's surface becomes a concave hemisphere.
水从叶子内部的细胞涌向外面的细胞，导致叶子迅速地从凸向凹翻转，就像一片柔软的隐形眼镜。
Water surges from the cells on the inside of the leaf to those on the outside, causing the leaf to rapidly flip in shape from convex to concave, like a soft contact lens.
你不能将“凸”、“凹”插头互换。
You cannot interchange a "male" with a "female" electric plug.
书架正好放得进壁凹。
The bookcase fits neatly into the alcove.
要进一步改善口感，看看它的“肚脐”：在有花的一端，茄子会有一个椭圆或圆形的小凹。
To further improve taste, check out its "belly button": At the blossom end, eggplants have either an oval or round dimple.
弯月面容器中之静止液体的弯曲上表面，如果液体浸润了容器壁，那么弯曲面呈凹状。
The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls.
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.
我们介绍了超凸度量空间中对角拟凸和拟凹的概念。
We introduce concepts of diagonal quasi-convexity and quasi-concavity in hyperconvex metric spaces.
我将要介绍的第一类边框是凸边或凹边。
The first type of frame I will show you is a raised or lowered border.
餐厅的墙壁上有个真人大小的奥巴马凹像。
There's a life-size cutout of Obama on the wall.
通过从检测器的舱室获取水分，检测器表面成为凹半球。
By extracting water from the detector's chamber, the detector surface becomes a concave hemisphere.
《高兴》，贾平凹。
Happy, by Jia Pingwa.
数以百计的旅客在塑料凹背椅子上，等待广播通知。
Hundreds of passengers, sitting in plastic bucket seats, awaited the boarding announcement.
这个简易的工作台可以在你钉出图案的时候避免弄凹灯笼。
This thin work area helps to prevent denting to your lantern when punching the design.
只需要将命令行参数换为+raise就可以创建一个凹边。
To create a lowered border, just use the + raise command-line argument instead. For example.
眼动跟踪记录这些移动，并且当眼睛注视时，标记中心凹的位置。
The eye tracker records these movements and the location of the foveal vision when the eyes fixate.
等进到一个昏暗的凹室，他脱下外套，显出了穿在里面的蓝色上衣。
Stepping into a darkened alcove, he shed his coat, revealing the blue blazer he wore underneath.
一个就是视网膜中央凹，一个用来看颜色并察觉出细节的中间地带。
One is the fovea, a central area used to see colors and pick out details such as fine print.
胃小凹顶部的细胞则产生胃黏液，通过胃膜的保护使胃不受胃酸的伤害。
The cells at the top of the pits produce mucus, which protects the stomach lining against gastric acid.
当地有一种传说，当然言过其实，说在奥安的那条凹路里坑了二千匹马和一千五百人。
A local tradition, which evidently exaggerates matters, says that two thousand horses and fifteen hundred men were buried in the hollow road of Ohain.
稍稍能安慰我们的，是在那石上有一个不大不小的坑凹儿，雨天就盛满了水。
The only happy thing was a small pit on top of it, which would be filled with water after rain.
稍稍能安慰我们的，是在那石上有一个不大不小的坑凹儿，雨天就盛满了水。
The only thing that had interested us in the ugly stone was a little pit on to P of it，which was filled with water on rainy days.
他要察看那灾病，灾病若在房子的墙上有发绿或发红的凹斑纹，现象洼于墙。
He is to examine the mildew on the walls, and if it has greenish or reddish depressions that appear to be deeper than the surface of the wall.
他要察看那灾病，灾病若在房子的墙上有发绿或发红的凹斑纹，现象洼于墙。
He is to examine the mildew on the walls, and if it has greenish or reddish depressions that appear to be deeper than the surface of the wall.