two cone 两圆锥
two-cone bit 双牙轮钻头
two-cone hydrocyclone 双锥水力旋流器
two-roll cone piercer 二辊锥形穿孔
two-dimension-cone-filter 二维圆锥滤波
two-high cone shape piercing 二辊锥形穿孔
Well, one way to think about it is imagine that you are walking on c, on the rim of this cone. You have two options.
一种办法就是想象你沿着C走,沿着圆锥的边走,你有两种走法。
Retinas use two main types of light-sensitive cells to allow animals to see: Rod cells help measure brightness, while various types of cone cells help distinguish colors.
动物主要借助网膜中的两类光感细胞获得视觉:视杆细胞帮助感知亮度,而种类众多的视锥细胞则帮助辨别颜色。
Tropical cyclones have killed nearly two million people in the last 200 years, so this remaining 'cone of uncertainty' in our predictions is unacceptable.
热带气旋过去200年来造成将近200万人死亡,因此我们预测的不准确度虽然逐步缩小,仍然是不能接受的。
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