leaf vein

Extending beyond the apex of a leaf , as a midrib or vein.

在接近中脉处有一个或多个切刻.

Ginkgo biloba leaf petiole, is actually composed of many vein from the collection of bundle group.

银杏叶的叶柄, 实际上是由许多叶脉集合而成的维管束群.

Among different positions of green tobacco leaf, the water content of mid-rip was the biggest, the second was lateral vein, the third was leaf base, the last were leaf margin and leaf tip;

在不同的叶位间，烟叶水分含量随着叶位的增高有递减的趋势，尤其是叶片水分含量的递减幅度最大。

To make leaf vein with sharp work stick.

用尖棒在叶片上划出细密直纹.

The sieve tube members in the minor leaf vein are differentiated through the formation of the P-protein body, the function of the lysosome in the vacuome and the secretion of the dictyosome.

小脉筛管分子的分化是通过P-蛋白体（P-protein body）的形成和液泡系的溶酶体作用，并伴之以高尔基体的分泌作用。