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。
他曾有一个凹陷的箱子。
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。
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。
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。
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 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；
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