<正> 0 IntroductionThe transporting actuating medium of coal-powder ventilators used in thermalpower plants is dual phases,i.e.consisting of gas and solid coal-
<正> 0 IntroductionAt present,photoelastic technology is widely used to measure the stress and thestress distribution of machinery parts models.In order to meas
<正> 0 IntroductionThe new design and manufacture model for carbide gear shaper tools have beendiscussed in[1]and[2]respectively.Because the gear shaping in the