The non-uniform flow behind a rigid cylinder row with a small pitch ratio T/D= 1.5 is characterized by narrow and wide near wakes and multiple frequencies, and the vortex shedding behind a rigid cylinder row with T/D= 2.0 is replicated properly by the simulation results.
此外，还研究了单列自由振动的弹性圆柱在间隙比为2.0时的流体诱导振动问题，结果表明：在大振幅条件下，流体诱导力在x方向和y方向有较强烈的耦合；随着振幅的减小，x方向振动对y方向振动的影响可以忽略，可采用单自由度的动力学模型假设进行计算。
The non-uniform flow behind a rigid cylinder row with a small pitch ratio T/D=1.5 is characterized by narrow and wide near wakes and multiple frequencies, and the vortex shedding behind a rigid cylinder row with T/D=2.0 is replicated properly by the simulation results.
计算模拟结果很好地重现了刚性单列圆柱在小间隙比(1.5)下以宽、窄尾涡交替和多频为特征的非均匀流态，以及间隙比为2.0时的涡脱落现象。
Both left- and right-handed helical ribbons with non-uniform helical pitch were observed in FH-Tn (n = 5, 6, 7) gels.
在FH-Tn(n=5，6，7)的凝胶中观察到了具有非均一螺距的左旋和右旋纳米带。
The results show that it is almost linear relation between time and Fe2+ conversion accordingly to kinetics feature of zero order reaction. The ferric yellow seed which is yellow, very fine, uniform and needlelike can be gained under following conditionstemperarure: room temperature; air-flow:0.1M3/h(300ml solution; alkali ratio:0.25; initial Fe2+concentration: 30%. The color of seed continuously changes with time from pearl blue to ultramarine to pitch-black tokelly to yellow.
实验结果表明：在晶种制备阶段[Fe~(2+)]的转化率随时间几乎呈直线变化，符合零级反应的动力学特征；在室温、空气流量为0.10m~3／h(300ml溶液)、碱比为0.25和初始亚铁[Fe~(2+)]浓度为30％的条件下可得到黄色、粒度细小且分布均匀、尚未形成针形的铁黄晶种。
Proof Coil does not have a uniform pitch and does not work with anchor windlasses.
Proof coil型没有一定标准的短锚链环而且也不能用在起锚机上面。
With a compensation of the bad accuracy lead screw, the accumulated errors compensation function of the lead screw pitch sorted and fit by the quadratic polynomial can reduce the affiliated disturbance of the error compensation, and conform the robot running at a uniform speed.
在丝杠误差补偿时，用二次多项式分组拟合丝杠螺距累积误差补偿函数，以减小修正量噪声引入，保证机器人工作速度的均匀性要求。
The application of numerical control technology and machining range of NC lathe can be extended by machining uniform variable pitch screw bar with numerical control technology by implementing straight-line movement of cutting tool and rotating movement of screw bar at the same time the double speed.
通过实现刀具沿丝杠工件轴线的变速直线运动和丝杠工件的变速旋转运动，来进行匀变螺距丝杠数控加工，扩展了数控技术的应用和数控车床的加工范围。
Spinnable mesophase pitch was prepared from catalytic cracking residue of petroleum and uniform mesophase pitch carbon fibre (MPPCF) was obtained.
以石油系催化裂化渣油为原料，调制出可纺性的中间相沥青，并纺出均匀的中间相沥青纤维。
In this paper, the output characteristics of TWT with uniform pitch slow-wave structure are calculated by BWIS, including its output power and electronic efficiency.
本论文依据BWIS模拟器模拟仿真计算了均匀等螺距行波管的输出特性，包括其输出功率及电子效率。
MWI overcomes the inherent problems of the WI model and adopts a more reasonable waveform interpolation model, which includes uniform synthesizer for the unvoiced and voiced speech, new prototype extraction and discription method and dynamic programming to improve the precision of pitch extraction.
MWI采用了一种更加合理的插值模型，包括统一的清音和浊音分析合成模型、新的典型波形的提取和表示方法，并且采用动态规划的算法增加基音周期估计的准确性。
Tapered grating have cyclical changing pitch and in the context of a smaller pass-ray can be approximated as a uniform grating. The diffraction fringes reflect the current location information.
锥形光栅的栅距呈线性周期性变化，在较小的通光范围内可以近似为均匀光栅，衍射条纹反应了当前的位置信息。
Besides, the characteristics with varying pitch and separation on hole centre of chain plate and the mechanism for uniform motion of drive is probed.
同时，对变节距特性、板孔中心分离特性以及匀速机理问题进行了探讨。
The large diameter mesophase pitch carbon monofiber in uniform size was obtained by controlling the matching of extrusion flow and drawing rate.
熔纺时控制了挤出流量和牵伸速率的良好匹配，获得了丝径均匀的大直径中间相沥青炭单丝。