The apparatus of the second one is simple and easy to manipulate, but whiteness tester cannot work if fluorescence of cotton linter pulp is weak.是什么意思_The apparatus of the second one is simple and easy to manipulate, but whiteness tester cannot work if fluorescence of cotton linter pulp is weak.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句