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     P2P is present application research a kind of calculation that valued most network form.
     P2P是目前应用研究最看好的一种计算网络形式。
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     For protecting the safety of IP datagram , IPSec is present the mainstream network layer's safe mechanism.
     对于保护IP数据报的安全而言,IPSec是目前主流的网络层安全机制。
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     Gene expression profiling studies with glioma tissues of different grades led us to the discovery that insulin-like growth factor binding protein 2 (IGFBP2) is overexpressed in the advanced stage of glioma-glioblastoma multiforme or GBM. Subsequent studies including tissue microarray analysis revealed the IGFBP2 overexpression is present in 80% of GBM and by far is the most frequent molecular event uniquely observed in GBM.
     经过对不同级别胶质瘤的基因表达谱研究发现,在高级别胶质瘤(胶质母细胞瘤和多形性胶质母细胞瘤)中胰岛素样生长因子结合蛋白2 (IGFBP2)呈过度表达,随之进行的微阵列分析表明80%的多形性胶质母细胞瘤过表达IGFBP2,这是目前为止发现的多形性胶质母细胞瘤最普遍的分子生物学改变。
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     HBV DNA is present regarded as the gold standard by which doctors judge wheather hepatitis B virus is replicating or not. Positive HBV DNA indicate that hepatitis B virus is replicating. Hepatitis B virus DNA>10~3 copy /ml is judged that HBV DNA is positive.
     HBV DNA是目前判断乙肝病毒是否复制的金标准,HBV DNA阳性表明乙肝病毒处于复制状态,HBV DNA阳性标准是HBV DNA>10~3拷贝/ml。
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     TZM alloy is present widely applicatedas a kind of high temperature alloy(mainly using at temperature higher than 1 000 ℃).
     TZM合金是目前广泛应用的一种高温合金(主要在温度高于1 000℃的情况下使用),该合金具有熔点高,强度大,弹性模量高,膨胀系数小,蒸气压低,导电导热性好,抗蚀性强以及高温力学性能良好等特点,因而在很多领域得以广泛应用。
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     Developed Along 6×1000tf~6×1200tf Link Press for Synthesizing Diamond
     6×1000tf~6×1200tf绞式液压机是目前我国金刚石专用压机发展方向
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     For C2 simulation and evaluation,the correspond reference model based on net centric warfare is the key problem.
     对C2系统仿真及评价而言,在网络中心战背景下构建一个良好的参考模型是目前C2领域研究中的瓶颈问题。
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     Active shape model is one of the most popular methods for facial image alignment.
     ASM(active shape model)是目前最流行的人脸对齐方法之一.
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     Distributed Denial of Service(DDoS) attack is among the hardest network problems.
     防御分布式拒绝服务(DDoS)攻击是目前最难处理的网络安全问题之一。
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     The Capital Asset Price Model (CAPM) use the most extensive model on the security market at present.
     资本资产定价模型(CAPM)是目前证券市场上应用最广泛的模型。
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     目前X.
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     C.
     目前,C.
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     Presently, the main way is education.
     目前最主要的途径教育。
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     The cofferdam is safe and stable.
     目前围堰稳定安全的。
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The trifluoromethyl group (CF3) is present in commercially available drugs of various therapeutic classes owing to its ability to modify and frequently improve their biological activities.
      
The two forests differ in forest humus layer; it is deep in the Ailao forest while little is present in the Xishuangbanna forest.
      
A quantitative reconstruction method of paleo-primary productivity is present on the basis of the investigation on the faunal record in cherts.
      
It was demonstrated that this protein is located extracellularly in the epithelium of mammary ducts, and that this regulatory protein is present in an active form in whole milk; however, it was detectable neither in dry milk nor in infant formula.
      
These changes in serum levels of LDH, insulin, and lactate at different altitudes suggest that a type of metabolic adjustment is present that meets energy requirements during exercise.
      
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This paper investigates the general and complete form of slope-deflection equations used in structural analysis. The word "complete" indicates that all the possible deformations (deflections and rotations) and all the strain energies (due to shear, direct stress and flexure) are included in the equations. The definitions, numbers, and relations of member constants are then discussed and the general equations for computing these constants are given. By neglecting the factors of minor importance, the general form...

This paper investigates the general and complete form of slope-deflection equations used in structural analysis. The word "complete" indicates that all the possible deformations (deflections and rotations) and all the strain energies (due to shear, direct stress and flexure) are included in the equations. The definitions, numbers, and relations of member constants are then discussed and the general equations for computing these constants are given. By neglecting the factors of minor importance, the general form is reduced to the usual slope-deflection equations. Some special forms of such equations which are useful in certain practical problems are also discussed briefly, such as the slope-deflection equations including the effect of direct stress on flexure and the slope-deflection equations of semi-rigid frames. Slope deflection equations for trussed bents are also presented.

本文旨在:(1)提出完全的角变位移方程,使可精确的解算任何形式的平面刚构,只要其能视为由若干桿件组成即可。这里的所谓“完全”,系指方程中已包括一切可能的形变值在内,而且包括轴向应力及剪应力之影响。(2)全面的讨论桿件常数的定义、数量和相互关系,并供给计算各常数的最一般性公式。(3)将上述全面的和精确的公式逐步简化,以便与目前常用的公式比较。(4)讨论某些特殊情况。

Ericerus pela Chavannes, the insect producing white wax,belongs to Coccidae,Homoptera. The female adult lays eggs while the male larva produces wax, whichis a well-known product from Southwest China. The wax secreted by the malelarvae may be boiled and extracted to result in something known as white wax.Its boiling point reaches above 82-83℃. It has manifold uses. Before WorldWar Ⅱ, besides the consumption at home, th greater part of this product wasexported abroad. The supply of the female adults of this wax...

Ericerus pela Chavannes, the insect producing white wax,belongs to Coccidae,Homoptera. The female adult lays eggs while the male larva produces wax, whichis a well-known product from Southwest China. The wax secreted by the malelarvae may be boiled and extracted to result in something known as white wax.Its boiling point reaches above 82-83℃. It has manifold uses. Before WorldWar Ⅱ, besides the consumption at home, th greater part of this product wasexported abroad. The supply of the female adults of this wax insect in the wax-producing districtusually appears short annually, due to a peculiarity in the growth of this creature;and therefore naturally exist two correlative districts, that is a district of adultproduction and one of wax production. As these two.districts are located morethan 500 kilometres apart,every year the female adults ready to be transplantedon he feeding trees in the district of wax production have to be supplied bythe district of adult production, and they must be carried over a long distance.The carriage of the female adults of the wax insect from one place to theother has been practiced for about five hundred years by the people engaged inwax production. This article reports on a test of transportation of the female adults of the wax insect from Paikuowan (白菓湾) in Hweili County (会理县), formerly of SikangProvince to Huhtaokou (核桃沟) in Omei County (峨眉县), Szechwan Province.Investigations in this connection were made from the April 30 to May 13, 1941. It has long been the aim of the growers to produce the female adults of theinsect and the wax in the same locality. With this realized, the area of wax pro-duction would be enlarged, and the quantity of wax increased. However, as the female adults of the insect in the distr .ct of wax produc-tion are subject to such natural adversities as geographical features, temperatureand humidity, parasitic enemies etc., up to the present they cannot be raised andsapplied insufficient quantity in this district. For this reason, to in prove themethod of transporting the adults female insects to the wax-producing district, toShorten the time on the way,and to increase the vitality of the male larvae-all these have become the crucial questions in the promotion of wax production. The principal explanation, knowh for centuries, with regard to the impossi-bility to raise the female adults of the insects in the district of wax productionhas been the peculiar fact that the female larvae could not be carried in quickorder to a place over 500 kilometres apart. The present test has proved that al-though the female larvae were, in the greater part, hatched out on the way, therewere still a part of them reaching the destination in safety. Valuable informat-ion was also obtained on the hatching rate of the male and female larvae on theway, the influence of environmental factors on the sex ratio, the different speciesof parasitic enemies, etc.. It is hoped thet the facts thus ascertained will be ofservice to improving the methods of wax production.

白蜡虫是我国的特产,古代农民远在元朝已有饲养。在过去全国的白蜡年产量约在五万至十万担间,据1918年重庆海关报告有一万一千余担,值银七十七万余海 关两。解放前一、二十年来,由于国民党反动派的不重视和摧残,已逐渐衰落。白蜡是化学工业上的重要原料,用途很广,饲养蜡虫又是西南各省农民的主要副业,而且农民群众已积累了非常丰富的传统经验。因此,为了总结群众经验,发扬科学遗产,改进饲养技术,振兴蜡业,我们希望能引起有关方面的注意和进一步研究,除研究改进白蜡虫的经管技术外,又须注意白蜡在工业上的用途。 白蜡虫的种蜡异地繁荣,在目前已成为自然的形势,而蜡区种虫不能自给,是白蜡业发展上的基本障碍。我们通过本次测验之后,认为我国适于蜡虫(雄虫)繁育的地方很多,如四川、湖南、浙江、安徽、福建、江西、江苏等丘陵地带都可扑虫产蜡,关键问题在于改善运种方法。在目前我国交通运输业已有普遍发展的基础上,只要用航空运种即可在短时间内将种虫运送至全国蜡区。扩大蜡区,增加农民副业收入,发扬我国科学遗产,为国家创造财富,利用益虫为生产服务,在目前已完全有实现的可能。

The gabled lean-to mill bent is an irregular rigid frame. The classical methods, e. g., the method of least work, slope-deflection, etc., for the analysis of the rigid frame are too tedious to be accepted, because they are not only dependent on the solution of simultaneous equations, but also the difficulty in establishing the equations. The method of moment distribution for computing the stresses of the same structure is also tedious because there are a great number of joint rotations and displacements involving...

The gabled lean-to mill bent is an irregular rigid frame. The classical methods, e. g., the method of least work, slope-deflection, etc., for the analysis of the rigid frame are too tedious to be accepted, because they are not only dependent on the solution of simultaneous equations, but also the difficulty in establishing the equations. The method of moment distribution for computing the stresses of the same structure is also tedious because there are a great number of joint rotations and displacements involving in the gabled lean-to mill bents.A new method, symmetry-antisymmetry method, for computing the stresses in symmetrical gabled lean-to mill bents is presented in this paper. The foundamental conception of this method is to determine the shape constants and load constants of the unsymmetrical Γ-shaped frame as a whole and to treat it as a single member in the analysis.

關於披屋廠房排架的應力分析,目前已有不少切實可行的方法。但以這類排架內部組織的特殊,一般通用的基本方法,多不能為實際工作者赢得時間和精力的充分節約。本文目的,在提供一個分析對稱式斜頂披屋廠房拂架的簡便方法,予以適當修正,並可推廣應用於其他各種類型的披屋廠房排架。本法的主要特點是將排架中具有“Γ”形的曲桿當作一個基本構件,從而求出這個基本構件在兩端結點角變和位移以及荷載作用下的“形常数”與“載常數”;並將不對稱荷載件成“對稱的”與“不對稱的”兩種情形,使在分析計算過程中必須考慮平衡的結點數目诚至最少程度。

 
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