non-lead英'nɒnl'ed美'nɒnl'edCOCA²⁵⁴³³⁷⁺⁶BNC²³⁶²¹³⁺¹ 基本例句 无铅¹⁰⁰ It is completely harmless in the use of the non-lead printing ink. 本产品使用无铅油墨印刷,不含有害物质。 tbea The application of non-lead welding technique is analysed and discussed in the paper. 仅就无铅焊接技术在手工焊接中的应用作一分析和讨论。 chemyq