iniciadores a cepa única 单一菌株发酵剂
But the trademark preemptive registration in the three regions actually became a trade barrier, which is in violation of the objective and goal of the CEPA.
但发生在三地之间的商标抢注为三地经贸往来造成事实上的贸易壁垒，有违cepa的宗旨和目标。
Uitrastructural changes of nuclei during the development of onion (A. cepa L. ) root tip cells have been observed by TEM.
用透射电镜观察了洋葱根尖细胞核在发育过程中的变化。
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