extension head 扩展头; 扩展首部
extension of fetal head 胎头仰伸
extension set [= extension telephone set] 分机; 副[电话]机
item extension and sequence extension pruning 项扩展和序列扩展剪枝
hammer head [= hammer head shark] 双髻鲨; Y髻鲨
head to head 对遇; 交头接耳地
head to head configuration 头对头结构
head to head structure 头接头结构
head wind [= head sea] 逆风; 顶[头]风; 逆浪
head-to-head 肉搏战
head-to-head polymer 头-头聚合物
hexagon socket countersunk head cap head screw 内六角沉头螺钉
hexagon socket head cap head screw 内六角圆柱头螺钉
Round head rivets with small head--Black 小半圆头铆钉
snap head rivet (round-head rivet) 圆头铆钉
Super Suction Head And Big Variable Head 大变幅超吸程
(strongly) excellent extension (强几乎)优越扩张
Ⅰ crack extension Ⅰ型裂纹扩展
3D modling extension 三维实体造型
60 years life extension 延寿60年