llama yarn是什么意思

用法例句

Researchers studied use of weft printing process in pure cotton towel fabric and discussed the principle of selection of dyes and chemicals.

研究了印纬印花工艺在纯棉毛巾织物上的应用，并讨论了染化料的选择原则。

Objective:To study the chemical constituents of Ligularia vellerea .

目的 :研究棉毛橐吾药用部位的化学成分。

The paper clarified that date of establishment of Ranunculus membranaceus Royle is 1834.

本文明确了棉毛茛的发表日期应为１８３４年。