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By using a fixed point theorem in cones, we investigate a second-order equation and the theorem of existence of unique positive periodic solution is given.
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摘要应用不动点定理，研究了一类二阶时滞微分方程，给出了其唯一周期正解的存在性定理。 |
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By using a new optical input power level detection and signal treatment method to control the gain of the receiver and keep its output level within the required range, a novel feedforward AGC optical receiver without radio frequency feedback circuits is r
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我们采用一种入射光功率电平检测与处理的新方法，对模拟光接收机的增益进行控制，将接收机输出电平控制在要求的范围内，实现了一种新型的无射频反馈电路的自动增益控制光接收机。 |
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By using a nonlinear equation satisfied the charge operator, the spectrum is calculated exactly in energy basis for each cell.
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根据电荷算符满足的非线性运动方程，在各单元能量基上，精确地计算了能谱。 |
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By using a normal laundry price, in case of any compensation, we will strictly follow the rules stated in our laundry list.
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如无办理此项过程，万一发生赔偿，我方将严格遵守洗衣单上说明处理。 |
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By using a numerical method, the effect of changing in magnetic field upon vibration frequency and coefficient of reduction is presented.
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最后给出数值结果，表明磁场的变化对振动频率及衰减系数的影响。 |
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By using a reflector and two pentaprisms, one beam of light is separated into two parallel beams, then respectively they are received by two optical systems of the large scale photoelectric theodolite with certain imaging D-value which correspondingly rep
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方法是利用一块反射镜和两块五棱镜将一束准直光束分光成两束平行光束，大型经纬仪的两个光学系统分别接收这两束平行光，两束平行光所成像的脱靶量差值即为两光学系统的光轴平行度。 |
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By using a related hepatitis virus, which targets only the liver, the researchers ensured that treatment would be specific to the site of infection.
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利用一个以肝脏为靶标,且有关系的肝炎病毒,研究人员相信治疗可以具有特异性局部性. |
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By using a same boundary dimensions high efficient and new type copper exchanger substituted carbon steel oil condenser, and increasing flow rate of circulation water to reduce the temperature of freezing oil which feeds into compressor stage Ⅱ, to elimin
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采取将碳钢材质的油冷却器更换成等外形尺寸的高效新型铜管换热器、增加循环水流量的方法，降低了进入二段压缩机冷冻油温度，排除了压缩机运行中的故障，改善了机组的运行效率。 |
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By using a unified system of picture production, the folk aesthetics successfully changed the styles and features of fine arts, but meanwhile disclosed the uncompromising contradictions between the folk aesthetic mechanism and the realistcreative mode.
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借助于一个统一的图像生产体系，民间审美观念成功地改变了美术作品的风格和特征，但同时也显露出民间审美机制与“现实主义”创作模式之间难以调和的矛盾。 |
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By using a wafer-rotating grinding machine, the influence of the main process factors including grit size of diamond grinding wheel, rotating speed of the wafer chuck table, rotating speed and the down feed rate of the cup grinding wheel on the material r
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摘要利用基于自旋转磨削原理的矽片超精密磨床，通过试验研究了砂轮粒度、砂轮转速、工件转速及砂轮进给速度等主要因素对材料去除率、砂轮主轴电机电流以及磨削后矽片表面粗糙度的影响关系。 |
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By using a zone, teams don't need the athletic poor shooters who can play man defense, but can hide slower players who can shoot the ball within a zone.
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通过使用区域防守，球队不再需要运动性很强能够进行个人防守的低能投篮者，但可以把一些能够投篮的速度较慢的球员隐藏在区域防守中。 |
