单词biconcave
adj.: 两面凹的
网络: 双凹的；双凹面的；凹凹
双凹面
两面凹的,双凹的
and a fourth lens formed of a biconcave lens having aspheric surfaces on both sides and an inflection point on an upper aspheric surface.
第四透镜，由双凹透镜形成，在两侧上具有非球面表面，在非球面表面上具有拐点。
Of biconcave of computer clavier biconvex sheltered evil people and practices the most easily, cleanness rises special inconvenience.
电脑键盘凸凸凹凹的最轻易藏污纳垢了，清洁起来非常不方便。
In 2 ~ growth of 7 years old of intervertebral disc is rapidder, and centrum begins appear biconcave phenomenon.
在2~7岁椎间盘发育较快，并且椎体开始出现双凹现象。
a second lens formed of a biconcave lens having aspheric surfaces on both sides;
第二透镜，由双凹透镜形成，在两侧上具有非球面表面；
These biconcave -shaped cells have the tall task of carrying oxygen to our entire body;
这些中间向内部凹陷的细胞的主要任务，是将氧气输送到我们的整个身体。