The very dark blue at the lower left and right is spongy bone of the periosteal bone collar of the shaft.This will later be remodeled into Haversian systems of compact bone.是什么意思_The very dark blue at the lower left and right is spongy bone of the periosteal bone collar of the shaft.This will later be remodeled into Haversian systems of compact bone.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句