特征水头（ characteristic head） 水轮机的水头随着水电站的上下水位的变化而改变，常用的 几个特征水头： （1）最大水头H max： 允许水轮机运行的最大净水头。
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characteristic head of storage pump 特征水头和扬程
characteristic head of hydraulic turbine 水轮机特征水头
head characteristic 压头特性
head-capacity characteristic 压头
head-capacity characteristic curve 容量特性曲线 ; 压头
head characteristic curve 扬程特性曲线
system head characteristic 系统压力特性
According to ding Wenjun, the most remarkable feature of his son is that he keeps a cool head, an important characteristic for a snooker player.
父亲丁文钧说，儿子最突出的一点就是能保持头脑冷静，对于台球手而言，这是一个至关重要的特点。
India, for example, exports not just garments and cheap electronics-characteristic of many countries with similar levels of income per head-but ships, petrochemicals, steel and business services.
例如印度不仅出口服装和廉价电子产品——这是人均收入水平与印度相似的国家典型的出口产品——它还出口船舶、石油化工产品、钢铁和商业服务。
Baboons have a large head, cheek pouches, and a long, doglike muzzle. They walk on all fours, carrying the tail in a characteristic arch.
狒狒头部硕大，有颊囊，鼻口部狭长似狗。以四肢行走，行走时尾巴呈特有弓形。
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