allowable pressure differential
allowable pressure drop
maximum allowable pressure
centroclinal pressure angle β
effective pressure angle
Expression of pressure angle
generating pressure angle
hob with small pressure angle
modified gearing of working pressure angle
non-equivalent modulus and pressure angle
normal pressure angle
法压力角
正压力角
法向压力角
齿形角
法面压力角
正向压力角
operating pressure angle