求教 Natural pitch 翻译成什么好?
在加拿大 我所指的 Natural pitch 包含以下产品: Pitch, cork Pitch, natural, for coatings Pitch, natural, caulking Pitch, natural, shoemaking Pitch, natural, grafting Pitch, natural, for electrodes Pitch, natural, for foundries Pitch emulsio...华人论坛