大部份
- 与 大部份 相关的网络例句 [注:此内容来源于网络,仅供参考]
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Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.
第二部份以2-呋喃甲胺为起始物,制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体;BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性;Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index, LOI)的难燃性特质,Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion, Low CTE)]均较其他聚氧代氮代苯并环己烷为优;4FP-FBz具有低之介电常数(Dk=2.7),以其作为降低介电常数之反应型改质剂,与P-FBz混成,证实可有效地降低Poly的介电常数。
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Within Pocilloporidae, the maximum diameters of juvenile Seriatopora hystrix was significant smaller than Pocillopora damicornis from 2-12 month. Some recruits of Seriatopora hystrix did not grow for more than a year.
而三种鹿角珊瑚科幼生中,尖枝列孔珊瑚幼生平均最大直径,在月龄2至12个月各月龄期,都有显著小於细枝鹿角珊瑚;同时尖枝列孔珊瑚幼生有部份幼生在一年内几乎没有增长。
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Intracystic carcinomas of the breast are rare entities that constitute 0.3% to 2.0% of all breast carcinomas, and the solid portion may be quite large at the time of diagnosis.3 We attempted to classify the types of sonographic findings of symptomatic cystic lesions of the breast and correlated these findings with the pathologic results.
乳腺的囊内癌是罕见的实体,占所有乳腺癌的0.3-2.0%,而且实性部份在诊断时已经较大[3]。我们尝试着根据超声特征和相关的病理结果将乳腺囊性病变进行分类。
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ATbstract: he small frequency modulated transmitter, the power is small, may launch the wireless signal, accepts the signal with the radio, satisfies certain transmission range, Circuit easy system, low cost, power output does not exceed 5-8 mW, firing range to be in the housing area of about 100 meters, with an ordinary FM radio receivers, demonstrating his superb sensitivity and clarity, the most circuit design challenges of the part is only used 3 V power supply, and half-wave antenna will be such a launch capability.simultaneously can input the sound signal, may install modulation surveillance table to serve as the monitoring device, although the power is not very big, but should the interference protection normal radiobroadcasting signal.
小型调频发射机,功率小,可以发射无线信号,用收音机接受信号,满足一定的发射距离。电路简单易制,造价低廉,输出功率不超过5-8mW,发射范围在房屋区可至100米左右,用一部普通的FM收音机接收,显示其灵敏度和清晰度俱佳,电路设计中最富挑战性的部份就是只需用3V电源和半波天线便有如此的发射能力。同时能够输入声音信号,可安装调制监视表头用作监视器,虽然功率不是很大,但是应该防止干扰正常的无线广播信号。
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Most conventional methods for the extraction of substrate network were based on the use of frequency behavior of Y22 + Y21. However, we found that the feedback signal through the internal circuit elements makes the conductance of the substrate network underestimated while makes the susceptance of the substrate network overestimated. If conventional methods are directly performed on large area SiGe HBTs, a negative effective substrate resistance will be extracted. In the first part of the thesis, a new extraction method for the substrate network parameters of SiGe HBTs is proposed. When extracting the substrate network parameters, the feedback signal through internal circuit elements is considered. All the circuit elements of substrate network are extracted from Ysub instead of Y22 + Y21. The extracted substrate network parameters show a different bias dependence as compared to the conventional methods. By using a simple n+-p junction, we successfully explained the extracted bias dependent substrate network parameters. We developed a series linear regression equation to extracted the intrinsic circuit elements from the ABCD parameters. Compared with the conventional methods which extracted the circuit elements from Y-parameters or Z-parameters, the proposed method is much simple and easy to implement in the computer programs.
传统方法在萃取基板网路参数时,常常由所量得的Y22 + Y21来著手,但我们的研究发现,利用Y22 + Y21的频率关系来萃取基板参数时,基板网路的电导会被低估而基板网路的电纳则会被高估,另外传统基板网路参数萃取方法在萃取大尺寸元件基板网路参数时会得到负值基板等效电阻,以上的非理想效应皆因忽略部份信号会经由本质参数对基板网路做回授的影响,因此本论文中提出一个新的基板网路参数萃取方法,在萃取基板网路参数时考虑了由本质参数所回授的信号,并且由Ysub而非Y22 + Y21萃取基板等效电阻、基板等效电容及基板与集极空乏电容,成功的解决上述的一些非理想效应,所得到的基板网路参数与集极偏压的关系与传统方法所得的趋势相异,经由一个简单的模型成功的解释了所萃取得到的基板网路参数与偏压的关系,在萃取本质参数时,我们舍弃传统萃取方法中常用的Y参数或Z参数萃取方程式,而改用ABCD参数,并提出一系列的线性回归方程式,萃取所有的本质参数,与传统方法比较起来,比较简单而且容易建立在使用者的参数萃取软体中。
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A four-month-old female baby was diagnosed to have an unreduced intussusception after a barium enema.
摘要一位四个月大的女婴被诊断为肠套叠,因观察钡剂复位仅呈部份成功,而接受开腹探查手术。
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A big part about modding is about trying some whacky stuff.
关于 modding 的一个大的部份有关尝试一些 whacky 东西。
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A Lead: Routes are climbed on lead, with the competitor belayed from below, each quickdraw is clipped sequentially and the height attained (or, in the case of traverse or roof sections, the greatest distance along the line of the route) determines a competitor's ranking.
先锋赛:选手采先锋攀登,由下方确保。各个快扣根据规定事先依序挂上。选手以达到之高度(在横渡或天花板部份,沿其路线之轴线的最大距离)决定其该场之名次。
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The first and most important tier of these consisted of the cerebrates, each entrusted with direct control of a sizable section of the Swarm.
组合中最高也最重要的阶级是脑虫,控制相当大的部份。
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The first and mostimportant tier of these consisted of the cerebrates, each entrusted with directcontrol of a sizable section of the Swarm.
组合中最高也最重要的阶级是脑虫,控制相当大的部份。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。