例句與造句

1. In 1920 Sebrell isolated mercaptobenzothiazole, a rubber vulcanization accelerator, and he devised ways of making it commercially pure.
2. A significant industrial application of piperidine is for the production of dipiperidinyl dithiuram tetrasulfide, which is used as a rubber vulcanization accelerator.
3. It's difficult to find rubber vulcanization accelerators in a sentence. 用rubber vulcanization accelerators造句挺難的