bulk fillerbulking materialcheapening additiveexpanding materialextenderextending agentincremental agent增量: increment; augmenter,increme ...剂: a pharmaceutical or other ch ...活性增量剂: reagent extender氟化物增量剂: fluorochemical extender功能性增量剂: functional extender下载手机词典可随时随地查词查翻译