In this paper both lead borate sealing glasses and lead free phosphate sealing glasses are studied.

本文研究了含铅的硼酸盐封接玻璃和无铅磷酸盐封接玻璃。

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In this paper both lead borate sealing glasses and lead free phosphate sealing glasses are studied.

本文研究了含铅的硼酸盐封接玻璃和无铅磷酸盐封接玻璃。

youdao