eyepiece的复数形式怎么写？

Looking through the eyepiece you will see two black circles.透过目镜你可以看到两个黑色的圆环.The star test is lightning - fast and requires only a good high - power eyepiece.光轴矫正是快速的并且要求需要高倍数的目镜.The simple negative element Barlow increa...

n.目镜...

eyepiece的音标：eyepiece的英式发音音标为：['aɪpi:s]eyepiece的美式发音音标为：['aɪˌpis]...