查询词典 pre-existent

It is shown that, the impact of IPI due to the pre-filter is insignificant to noncoherent receiver, and there exist different optimal pre-filter passband widths for different channels and input SNRs.

结果表明，在信道模型CM1~CM4下，前置滤波器产生的多径分量干扰平均来说对其输出能量的影响很小，并且一般来说存在一个最佳的滤波器带宽值。

The electrons in the pre-plasma are accelerated by the ponderomotive force of propagating laser pulse, and the dependences of the maximum electron energy on the laser intensity and the pre-plasma density are examined.

当激光脉冲与靶直接作用时，靶中的电子由于J×B机制而得到加速，所获得的能量比预等离子体中电子低。

IPod. According to 据 PreCentral 中央前, Palm Pre hack allowing itself to be identified as follow when the Pre is plugged into a PC or Mac whilst in Media Sync mode.

棕榈预劈允许自己被确定为预时应遵循的是插入PC或Mac，而在媒体同步模式。

The cognitive confict.﹡The change of preconcept. While summarizing the concept research abroard, the dissertation studies the teaching of Physics concepts in China and understands how the teachers instuct the Physics concepts in the classroom.﹡Basically indentifying the importance in teaching Physics concepts.﹡Knowing the existence of pre-concepts in the students'mind to some dgree.﹡Lacking the teaching methods to change pre-concepts in the students'mind.

笔者在总结国外概念研究的同时，也在关注国内的物理概念转变教学，并用问卷调查了07年江苏省物理新课程培训的一线物理教师，总结了一线教师对于物理概念转变教学的认识：﹡对于物理概念的教学重要性有一定的认识；﹡对于学生所具有的前概念有一定的了解；﹡对于学生前概念的转变缺乏科学的认识。

His recently published account of his year contains a list of prematch supersitions that are so complex that he apologises to the reader in advance:the identical seat on the team coach,three sips of wateron the journey,three bananas for his pre-match meal, a seat always directly in line with the right-hand side of the screen for Mourinho's pre-match briefings.

他最近出版的年度自传中透露了他在赛前的一些迷信想法，这些迷信内容有的非常复杂，但他事先已经向读者们致歉了：他在球队大巴上总是坐相同的位置，前往球场的途中只喝3口水（从不喝4口），在赛前正餐中他必须要吃3个香蕉，在穆里尼奥赛前的吹风会上一定要坐在和屏幕右端呈直线的椅子上。

The pre-filter combines the characteristic of images and advantages of the pre-filters prevailingly used in multi-wavelet image coding.

实验数据表明，这种新的前置滤波器优于现有的二种前置滤波器，因而为提高图像压缩比创造了条件。

At last, natural frequencies of practical pre-stressed composite space truss are tested with pulsatory method on construction site and its damping ratio is calculated, which gives another important data for engineering design. In addition, through the model experiment of pre-stressed rectangular square pyramid composite space truss, the correctness of characteristics of internal force and the feasibility of tension recovery method are proved.

最后，在工程施工现场用脉动法测试自振频率，并借助于振动衰减曲线和半功率点法计算出预应力组合网架——钢与混凝土的混合结构体系——的阻尼比，此又为工程设计提供了一理论依据；另外，通过正放四角锥预应力组合网架的模型试验，验证了结构内力分布特点的正确性以及张力松弛法的可行性。

The common suspension roof support without pre-stressing based on the constant stress field is no longer safe for such engineering. Recently, the popular and receptible supporting form is high-strength pre-stressed bolting with resinic anchoring agent for the deep underground engineering.

基于浅部常应力场的普通非预应力锚杆支护已不能满足此类工程的安全性要求，以树脂药卷作锚固剂的高强、超高强预应力锚杆支护应属于目前最能符合此类深部地下工程的支护形式。

Stress of Cu and Cd reduced the amounts and remobilization rate of pre-anthesis stored assimilates and total amount of pre-anthesis stored assimilate.

其中，以Cu_2、Cd_2处理对叶片花前贮藏物质再运转量和再运转率的影响最大，Cu_3、Cd_2处理对茎鞘和颖壳花前贮藏物质再运转量和再运转率影响最大。

Bidders will not be invited to participate in the rewardful design without passing the pre-qualification; bidders with intent should sign up and collect the pre-qualification documents and the relevant from Cheng Du WanAn Construction Project Management Co., Ltd (Address: 7th Floor, Guangdian International Plaza, 30# Xiaxishuncheng Rd, Chengdu City, Sichuan Province, China); or submit the all documents per fax, EMS, or e-mail to the above address before the closing date of registering.

资格预审合格的投标人方可参与有偿设计，有意向的投标人请到成都市下西顺城街30号四川广电国际大厦7楼的成都万安建设项目管理有限公司报名并领取资格预审文件和相关资料。或将所有资料通过传真、邮政快件或电子邮件于报名截至日前送至上述报名地址。时间为2007年4月17日至4月23日上午9时至11时，下午2时至5时。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。