合头是戏曲音乐名词。在传统套数中， 若干曲的联缀， 其开始或末尾一，二句采用相同或相似曲调， 从结构上讲， 开始相同者称为合头， 结尾相同这称为合尾。
联合头盔提示系统 JHMCS ; Joint Helmet Mounted Cueing System
合头草 Sympegma regelii ; regelii
合头菊属 Syncalathium ; Syncalathium Lipsch ; Syncathium
混合头痛 combination headache
镗镗滚组合头 TTG
联合头盔指示系统 JHMCS ; Joint Helmet Mounted Cueing System
联合头盔瞄准系统 JHMCS
联合头盔显示系统 JHMCS ; Joint Helmet Mounted Cueing System
联合头盔指引系统 Joint Helmet Mounted Cueing System
必须定期检查大钳的折页销子，扣合头和弹簧，如果出现磨损超标，就更换。
The rig tongs hinge pin, latch lock and springs must be inspected at regular intervals and changed out if excessive wear is encountered.
主要介绍带状光缆成缆机及气动盘式SZ绞合头、双头同心同点扎纱等关键单元。
The cabling machine for fiber ribbon cable, and its key units, such as pneumatic SZ stranding plate and co-point cross binding head are introduced.
那就是说，牙刷柄应该合手，牙刷头应该合嘴并能刷到牙齿的每个面。
That means the toothbrush handle should fit comfortably in your hand and the toothbrush head should feel comfortable in your mouth and be able to reach every tooth surface.
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