They used strings previously treated with powdered glass.

他们使了事前玻璃粉末的绳子。

Now they wear rubber fingers treated with lactic acid.

现在他们带上了乳酸的橡皮指套。

Solid acid alchlor catalyst was prepared from anhydrous aluminium trichloride through liquid solid solvent method,with pretreated bentonite as support.

以无水三氯化铝为料,并以的膨润土为载体,固溶剂法制备固体酸催化剂。