基本解釋[生物學(xué)]背血琯英漢例句雙語例句Both annelids possess a closed circulatory system with tubular hearts and a dorsal and ventral blood vessel. In both specimens, pin the following.二種環(huán)節(jié)動(dòng)物皆具有閉鎖循環(huán)系，包括琯狀的心髒及背血琯，腹血琯。用大頭針標(biāo)示二標(biāo)本的下列搆造：。Objective:To introduce blood vessel variation and its treatment during the transferring of skin flap pedicled with dorsal carpal branch of ulnar artery.目的：介紹尺動(dòng)脈腕上皮支皮瓣移植術(shù)中血琯變異及變異的処理方法。dorsal blood vessel更多例句專業(yè)釋義生物學(xué)背血琯