液动压拔管    hydrodynamic tube drawing

氢退火    hydrogen annealing?

氢脆性    hydrogen brittleness

氢蚀致脆    hydrogen embrittlement

氢过电压    hydrogen overvoltage

碲化氢    hydrogen telluride

氢焊接    hydrogen welding

氢发生剂    hydrogenite

可锻铸造铝合金    hydronalium

铃静压成形    hydrostatic compacting

铃静载荷    hydrostatic loading

铃静压润滑    hydrostatic lubrication

静液压制    hydrostatic pressing

静液压应力    hydrostatic tension

收湿性    hygroscopic property

过共晶    hypereutectic?

过共析钢    hypereutectoid steel

过共析    hypereutectoid?

亚共晶铸铁    hypoeutectic cast iron

亚共析    hypoeutectoid

磁滞曲线记录计    hysteresis curve recorder