Design for UL94 burning testing standard and the international testing standards.Testing in airproof condition.The advance calculagraph to avoid operation error.是什么意思_Design for UL94 burning testing standard and the international testing standards.Testing in airproof condition.The advance calculagraph to avoid operation error.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句