tarpaulin rod是什么意思

用法例句

A preliminary study was carried out to explore the feasibility of using the red pigment of Rubus hirsutus Thumb as a new-type natural food pigment.

为探讨蓬红色素作为一种天然食用色素的可行性 ,该文对其色素的稳定性进行了初步研究。