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。

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

youdao

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。

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

youdao