您要查找的是不是：
- This lens can magnify 20 diameter. 这个透镜能放大20倍。
- The diameter of the tree-trunk is about 2 meters. 这树干的直径大约是2米。
- Reception improved because of the new antenna. 接受效果因有新天线而得到改善。
- The axis of a circle is its diameter. 圆的轴线是其直径。
- Measure the diameter of this circle. 量一下这圆的直径。
- We must gauge the diameter of wire first. 我们必须先测量电线的直径。
- A tube with a very small internal diameter. 毛细管一根内径十分细小的管子
- No antenna, no radio, we're back in the nineteenth century! 没有天线，没有无线电，我们回到十九世纪了。
- antenna diameter 天线直径
- You should fix the television antenna before receiving programs. 接收节目前，你应该先装天线。
- The reception is very poor. Let me adjust the antenna. 接收效果太差了。让我来调一下天线。
- satellite antenna diameter 卫星天线口径
- Extend the telescopic antenna vertically. 竖直地伸张伸缩式天线。
- He said he would head the antenna with a ball. 他说他还要给天线安个圆头。
- The pond has a diameter of three hundred metres. 这池塘直径有三百米。
- He erected a television antenna on the roof. 他在房顶立了电视天线。
- A circle is bisected by any diameter. 圆被任一直径二等分。
- They erected a television antenna on the roof. 他们在屋顶上架起了电视天线。
- The headphone cord functions as the FM antenna. 耳机导线也具有FM天线的功能。
- For the nuclear diameter we have used 18fm. 我们用18fm作为原子核的直径。
