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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
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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