基本解释n.[植]真中柱( 存在於大多數裸子植物和被子植物的莖內)同根派生 eustele相关词英汉例句The vascular bundles of the stem are arranged in a ring within a single endodermis and pericycle, giving a eustele. 莖內的維琯束在皮層和中柱鞘內排列成環狀，形成真中柱。eustele更多例句