双圆锥 meaning in English

biconical
double cone

Hub flanges for double conical grinding wheels for portable grinding machines ; dimensions
轻便式砂轮机的双圆锥形磨砂轮的紧固毂缘.尺寸
Under internal pressure , equilateral frustum shell tends to wrinkle at the equator , and the circular degree of the obtained vessel is poor
摘要等边双圆锥台壳体在内压的作用下，赤道环焊缝处易产生失稳起皱，且胀形后所得容器圆度较差。