他的胃是凹的。
他曾有一个凹陷的箱子。
Since this is a concave function, it's not just the expected value.
由于这是一个凹函数，它不仅仅是期望值。
所述第三边缘呈凹状。
镜子呈凹面。
Morphological analysis of concave block.
凹形块体形态分析。
My account is concave, and so deep I born.
我的就是凹进去的，并且很深我天生就这样。
Was dark red apples, go on top of a concave hole.
莲雾呈深红色的，顶上有一个凹下去的小孔。
His figure looks very funny in the concave mirror.
他的样子在凹镜里显得非常可笑。
The low base is embedded to the second concave part.
该下底座嵌入于该第二凹陷部。
Mystic quartz cut into Concave cut is very beautiful.
神秘石英切割成凹切的是，漂亮极了。
Later the theory of concave hollow Earth was also advocated.
后来凹空心地球理论还主张。
The front of ancient bronze mirrors has flat and concave surface .
古代青铜镜的镜面有平面的，也有凸面的。
A first concave part is formed on the top surface of the base plate.
该基板的该顶表面形成一第一凹陷部。
A second concave part is formed on the bottom surface of the base plate.
该基板的该底表面形成一第二凹陷部。
The head is a concave dish of permanent magnet with a hole in the center.
照射头部是一带有中心孔的永磁体凹形圆盘；
The base has special concave design, and can be fixed with double-sided tape.
底板有特殊凹位设计，可以直接用双面胶固定。
Therefore, although the font is small, but very deep concave, but very clear.
所以字体虽然小，但是凹得很深，而且非常清晰。
The results indicate that the concave shoulder can make the material flow better.
当采用凹面轴肩时，材料流动状况更明显。
Show: If the firm's production function is concave, it's profit function is concave.
证明：如果一个公司的生产函数是凹函数，那么它的利润函数也是凹函数。
Show: If the firm's production function is concave, it's profit function is concave.
证明：如果一个公司的生产函数是凹函数，那么它的利润函数也是凹函数。
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