套 tào HSK2 cover Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: tau All meanings 130 tào 130 set 109set of behavior 12overlap 5bend 1elicit 1harness 1tau 1 1 sentence for 套 (tào — tau) 在数学公式中,我们常用希腊字母套来表示常数。 zài shùxué gōngshì zhōng, wǒmen chángyòng Xīlà zìmǔ tào lái biǎoshì chángshù. In mathematical formulas, we often use the Greek letter tau to represent constants. Source: Dong Chinese Dictionary