Solid polymer
[化] 固相聚合物
🧩 词语组成解析
🗣️ 情景例句
I'm leaving for Beijing on a four-day tour.
我马上要去北京旅游4天。
Tell us about your post-purchase servicing.
告诉我们有关你们售后服务的情况。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。