principal vein
英
美
主脉
principal vein的用法和样例:
例句
The central or principal vein of a leaf.
中脉中心的或主要的叶脉
principal vein的相关资料:
临近单词
principals
principal
principal culprit
principal conduit
principal machine
principal azimuth
principal station
principal offence
principal E plane
principal fixation
principal exponent
principal meridian
目录
查词历史
英 汉