压力水头，压位差，压力感受器
1. 压头：疑问:如果天然气喷出地表,其压头(pressure head)通常不过几十米且直接向上,一经喷出,压力锐减趋零,在此情况下,很难想像如何将地表的花岗岩挤碎. 其喷出口在哪里?
2. 压[强水]头：back water curve 壅水曲线 | pressure head 压[强水]头 | flow cross-section 过水断面
3. 压力落差：74 填料压盖,衬垫压盖 packing gland | 75 压力落差 pressure head | 76 引导点火 pilot ignition
1. pressure head的意思
1. As the head of his clan, he claims that he felt the " pressure from his ancestors ".
2. " The risk of overheating lingers as investment still faces great upward pressure, " said NDRC head Ma Kai.
3. " You really have to credit our defense getting pressure on the quarterback, " interim head coach Aaron Kromer said.
4. Aso now faces strong pressure within the LDP to hold a presidential election to replace him as its head prior to the lower house election.
5. But the rules are vague and there are reports of alleged offenders being beaten and teachers being told to pressure girls to wear head scarves.