circular disc
常见例句
- Pu'er tea is sold as a circular disc known as a "tea cake."
普洱茶卖的时候象一个圆盘，也就是我们知道的“茶饼”。 - The parabolic antenna fed with half-wave dipole, with circular disc short-focus parabolic reflector was studied.
研究了一种半波振子馈电的带圆片副反射面的抛物面天线。 - One end of an angle rotation ruler is provided with a circular disc section. The circular disc is provided with an indicator.
一角度旋转尺，其一端有一圆盘部，该圆盘上设置有指标；
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