Ultrasonic wave has been applied in the dyeing process of the Apocynum Venetum-fiber in order to improve the dye-uptake and accelerate the dyeing rate.

• 一位以前的同事现在的朋友告诉我，她换了新工作，是一种保健品的直销公司，她觉得信心满满，然后几次邀请我去参加他们产品的推介会，让我帮她参谋一下新工作的成色。