知識貝殼
知識貝殼
所屬欄目：英漢雙解生物學
A cup-shaped socket on eachside of the pelvic girdle in tetrapods thatholds the rounded head of the thigh bone (fe-mur) to form the hip joint. This ball-and-socket arrangement allows for great stabilityand a wide range of movement.四足動物腰帶四周的杯狀的窩形結構,連接大腿骨(股 ......（本文共 261 字 ） [閱讀本文] >>