我们的锗酸盐玻璃的声光品质因数优于重燧石玻璃。

The acoustooptical quality factor for our germanate glass is better than that of heavy flint glasses.

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我们的锗酸盐玻璃的声光品质因数优于重燧石玻璃。

The acoustooptical quality factor for our germanate glass is better than that of heavy flint glasses.

youdao