汉英一 开First Spuded二 开Second Spuded三 开Third Spuded钻头Bit泥浆Mud parameter密度颠黑倒白Density粘度Viscosity秒S修理设备Repairing equipment保养钻机Lubricate rig划大绳Slip drilling line修泵Repair pump换冲管Change wash pipe准备Preparation

2014年IEEE国际学术会议序号会议名称会议时间会议地点6552014 4th International Electric Drives Production Conference (EDPC)Abstract submission deadline: 28 Feb 2014Final submission deadline: 31 Jul 2014Notification of accept

压电陶瓷频率计算和厚度关系苏小沫儿    压电陶瓷频率计算公式：f = (1/2d) x sqrt(Ep x Es/(Ep + Es) x d)    其中，f为压电陶瓷片的共振频率，单位为赫兹（Hz）；d为压电陶瓷片的厚度，单位为米（m）；Ep和Es分别为压电陶瓷片的介电常数和弹性模量，单位为法/米和帕斯卡（Pa）。颠黑倒白    从公