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Every day, they carved a hole in the orifices, drilled seven days of chaos also died.

他们每天凿出一个孔窍,凿了七天浑沌也就死去了。

By using EFS injection test bench,this paper studied the different performance of electronic injector with different type of orifices.

使用EFS喷射试验台,测量电控喷油器在匹配不同参数的节流孔板后所表现出的喷油特性,并加以分析。

Pull the switch out from the mounting hole in the door opening far enough to access the wire harness connector.

从车门洞里的固定孔中将开关拉出足够远,以便能处理线束接头。

All index proved that the P5776 cDNA library constructed in this research had high quanlity and could be used for further ESTs sequencing and analyzing. The amplified library of P5776 was screened on white-blue plates, and more than 5,000 white-clones were selected to culture in 96-well plates, then the high quanlity plasmids of white-clones were extracted by traditioal alkaline-lysis method using the Vitagene?96-easy plasmid extract kit. Through PCR primered by T3( the vector has T3 RNA polymerase promoter ), the target fragments of inserts were get. Then the inserts were taged by four different fluorescence-dye, and fractionated by capillary in ABI Prism? sequencer. More than 5,000 5′-ESTs had been sequenced and through rough selecting, 4,747 ESTs were remained for further research. Among the remained ESTs, more than 90% have longer lenth than 500bp, and there are less than 5% unable-read bases in every sequence.

将扩增好的P5776 cDNA文库铺布蓝白斑筛选平板,挑取其中的白斑经活化培养后,运用Vitagene 96-easy质粒DNA制备试剂盒以碱裂解法共提取出58 板(96孔板),即5,000 余个重组子克隆的高质量质粒DNA;提取好的质粒以T3(连接载体上具有该引物RNA聚合酶启动子)为引物经PCR(Polymerase Chain Reaction,聚合酶链式反应)扩增出重组子插入片段,标记上荧光染料后在ABI Prism 3100 测序仪上经毛细管电泳完成了5,000 余条5′端EST 序列的测定工作,初步筛选出4,747 条质量较好的EST序列,经筛选得到的EST中90%以上具有大于500bp 的可读序列,每一EST序列中不可读碱基数小于5%。

To solve the exsisting problems in the realization of the LFM/CW radar, the thesis presents a technique for dynamically measuring the LFM/CW signals, which can accomplish the dynamic measurements of FM linearity, FM bandwidth and FM slop of the transmitted signals of LFM/CW radars. This technique creates an effective and accurate means of judging the performance of LFMCW radars. The linearity-correction techniques presented in the thesis successfully make the linearity of the transmitted signals of an actual LFM/CW radar reduce from approximately 25% to 0. 1%(or r. m. s linearity of 0.04%), better than the best results (0.22%) obtained by foreign researchers with complex linearization closed-loop in the same kind of LFM/CW radars, according to the published literatures during the last decade. In order to improve the capability of the real-time processing and range-cells management of LFM/CW radars, the principle of equivalent mixing by lacking-sampling process of band-pass real signals is proposed based on the well-proved improvedversion of sampling theorem of band-pass real signals. This principle is used to configure the range-segments processing of the beat signals of an actual LFM/CW radar. The techniques of system-background interference suppression and the beat signal's dynamic range suppression are proposed, and are realized in an actual LFM/CW radar to demonstrate their effectiveness.

针对线性调频连续波雷达实现中急待解决的技术问题,文中提出并验证了线性调频连续波信号的综合动态测试技术,可以完成对线性调频连续波雷达发射信号的扫频线性度、扫频带宽和扫频斜率的综合动态测试,为衡量实际线性调频连续波雷达的系统性能创立了精确有效的测试手段;文中建立的非实时闭环动态校正技术使一部实际的线性调频连续波雷达的发射信号(时带积3×10〓)的扫频线性度从25%改善为0.1%(方均根线性度0.04%),优于国外已公布的80年代同类雷达中采用复杂的实时闭环动态校正环路所获得的实际结果(0.22%);为了改善线性调频连续波雷达的实时性和分辨单元数处理能力,文中发展完善了实带通信号的采样定理并给予了严格证明,并在此基础上提出了欠采样等效混频原理,将其应用于实际线性调频连续波雷达的距离分段处理中;针对线性调频连续波雷达中系统背景干扰和回波动态范围问题,创立了系统背景综合抑制技术和频域动态范围压缩技术,并将它应用于实孔线性调频连续波雷达系统中,显示出它们的有效性。

In this paper,established the functions of irrigation application efficiency,irrigationdistribution efficiency and water store efficiency according to the parameters of water flowadvance and infiltration for furrow and border irrigation with tailor water condition.

本文提出根据膜孔沟灌的水量平衡原理,由水流行进方程和有关参数,确定入渗方程,并根据灌水均匀度、灌溉效率和储水效率的定义,推导出长沟畦灌溉有排水条件下由行进方程和入渗方程的参数确定的灌水均匀度方程,与沟畦长分段求解方法相比,其误差小于2%。

Pulse-type traps Pulse and two orifice traps are down according to changes in vapor pressure regulating valve switch, even if the valve is completely closed the entrance and exit is through the first and the second hole connected, always not fully closed, the steam constantly Yat out Water Power Control Valves steam leakage large.

脉冲式疏水阀脉冲式疏水阀有和两个孔板根据蒸汽压降变化调节阀门开关,即使阀门完全关闭入口和出口也是通过第一、第二个小孔相通,始终处于不完全关闭状态,蒸汽不断逸出,漏汽量大。

Has happened in two parts: First, a hole on valve cover; and one on rod and valve cover thread root junction.

发生部位有两处:一是上阀罩出油孔处;一是拉杆与上阀罩连接处螺纹根部。

Has happened in two parts: First, a hole on valve cover; and one on rod and valve cover thread root junction.

发生部位有两处:一是上阀罩出油孔处;一是拉杆与上阀罩连接处罗纹根部。

The shortcoming of top valve housing for standard type oil well pump plunger is wear and rupture of oil flow pore wall.

标准型抽油泵柱塞上阀罩的工作缺陷是出油孔壁磨损断裂。

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