杂草中危害通常仅限于叶脉间的条状区域.On grasses, injury is usually confined to areas between the veins.叶脉有两种:平行脉和网状脉.There are two kinds of venation , parallel and net.叶脉中木质部比重越大,越有利于水分的传输.Large proportion of xylem benefit to the water tr...

“叶脉”的拼音为：yè mài...

“叶脉”的英语可以翻译为：[植] leaf vein，vein，nervation，nerve，nervure ...