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；toff为脉间；Jm为平均电流密度. 图1 方波脉冲电流波形示意图 Fig. 1 Schematic diagram of square wave pulse current 实验装置如图2所示,镀槽采用1 000 mL烧杯,阴,阳极面积之比为1:1.5,极间距为25 mm.阳极采用加拿大INCO公司的不含硫镍板.阴极芯模为不锈钢片,实验开始前必须经抛光,除油和超声波清洗......
横波速度变化率随频率的变化(频散属性).频散属性的大小直接体现了岩石中的含气情况,可作为一种新的烃类指示剂. 1.3 频谱分解技术 对于一道地震数据x(t),利用频谱分解技术可以获得某一频率fi下的单频数据S(t,fi),而S(t,fi)包括了反射系数ref,地震子波wave,随机噪声noise的影响: (11) 因此,必须消除地震子波,随机噪声的影响.随机噪.... 9 Common frequency section of the 20th pre-stacked gathers (balanced) 图10 第20道叠前道集及反演得到的纵波频散属性 Fig. 10 20th pre-stacked gathers and the P-wave dispersion property 图11 纵波频散属......
, individual droplets are ejected by a pressure wave only when needed and the processes of melting, molding, casting, solidification, and machining can be combined in a single process. In DOD printing......
Systems. Long Beach, 2007: 99-102. [14] Li J, Li W Y. A fully integrated LNA for COMPASS receiver in SiGe-BiCMOS technology[C]// IEEE MTT-S International Microwave Workshop Series on Millimeter Wave......
) The time-average convection flow induced during the passage of an acoustic wave, namely acoustic streaming, was modelled based on the theory proposed by LIGHTHILL [15]. It was assumed that the irradiating......
tungsten and the shielding gas was argon (99.99% purity) with 8 mL/min flow rate. The current was alternative type (AC) with a square wave. Process parameters are given in Table 2 and Eq. (1) was used......
. PENG Shao-fang, XIANG Lan, ZHANG Zhao. Study of scheelite leaching with HCl assisted by ultrasonic wave[J]. China Tungsten Industry, 1989(2): 7-13. [13] 卢友中, 曾青云, 陈庆根. 微波辅助碱分解低品位黑(白)钨精矿[J]. 矿产综合利用......
of a high-speed train nose to minimize the tunnel micro-pressure wave[J]. Structural and Multidisciplinary Optimization, 2010, 42(6): 965-76. [9] 田红旗. 列车空气动力学[M]. 北京: 中国铁道出版社, 2007: 40-42. TIAN Hongqi......
能的影响[J]. 焊接学报, 2010, 31(1): 89-92. CONG Bao-qiang, QI Bo-jin, ZHOU Xin-guo, LUO Jun. Effect of hybrid-pulse square-wave current frequency on microstructure and mechanical properties of 5A06 aluminum... and Manufacturing Processes, 2003, 18: 1-22. [14] PASTOR M, ZHAO H. Porosity, underfill and magnesium loss during continuous wave Nd:YAG laser welding of thin plates of aluminum alloys 5182 and 5754......
. Application of particle swarm optimization to interpret Rayleigh wave dispersion curves[J]. Journal of Applied Geophysics, 2012, 84: 1-13. [17] 师学明, 肖敏, 范建柯, 等. 大地电磁阻尼粒子群优化反演法研究[J]. 地球物理学报, 2009, 52(4......
