下壳

A virus strain was isolated from the arthrosis of broiler chickens.The virus was shown to have spherical particles with isometric symmetry,no envelope,double deck capsids,with outer capsid of 75nm,inner one of 50nm in diameter by electron microscopy.The virus was not sensitive to aether,acid and heat.The virus could multiply on the chick embryo fibroblastcell,and could cause syncytial pathologic change with the appearance of cytoplasm inclusion bodies.The challenged chickens of one-day old by nasal,oral,intramuscular and pulvillus injection displayed obvious clinical symptom of severe arthritis and accompanied with pathological changes of malabsorption and necrosis.Meanwhile,four avian reovirus isolates CL,S1133,YH and YB were examined in the cross-neutralization test.

从临床患病鸡关节病料中分离到一株病毒，在电镜下观察到病毒粒子无囊膜，有双层衣壳，外衣壳直径约75nm，内核约50nm；分离病毒株对酸、热有较强的抵抗力，对乙醚不敏感；病毒感染鸡胚成纤维细胞上能产生以融合细胞为特征的CPE；爪垫接种1日龄雏鸡表现出明显的病毒性关节炎临床症状，并伴有吸收障碍型和坏死型的病理变化；血清中和交叉试验表明，该病毒分离株与国内的2株番鸭源呼肠孤病毒分离株和国外S1133呈不同程度的交叉反应。

The signal drop at globus pallidus and putamen on two sequences were evaluated by two neuroradiolgists who did not know the clinical features of the patients. A hypointensity in the dorsolateral putamen equal to or lower than that in globus pallidus was taken into account as the main clue to differentiate the two diseases.

两名放射科专业医师在不知道患者临床诊断的情况下评价两个序列上苍白球和壳核的信号变化，背外侧壳核的信号等于或低于苍白球的信号作为两种疾病影像鉴别诊断的主要指标。

In some cases, the reverser needs to know the internals of the operating system in order to identify or solve very difficult anti-reversing tricks employed by packers/protectors, patience and cleverness are also major factors in a successful unpack.

在某些方面，逆向者需要知道操作系统的内部结构，以便识别或是除掉加壳者设下的非常困难的反逆向陷阱，同时耐心和智慧也是一次成功脱壳的关键因素。

In order to find the post-buckling path for ring-stiffened shells under hydrostatic pressure and consider the practical shapes of ring sections, the Compound Strip Method is applied to the post-buckling analysis of ring-stiffened cylindrical shells.

为了研究水压作用下的加肋柱壳的后屈曲状况，并且能考虑到肋骨的实际截面形状和分布情况，本文将复合有限条方法应用于环加肋圆柱壳的后屈曲分析。

In the analysis, a nonlinear wave vibration equation of the thin cylindrical shell including damping and items due to geometric nonlinearities was established and then transformed by Galerkin's method. With different combinations of modes different nonlinear differential equations in modal coordinates were obtained. The Runge Kutta method was used to solve the equations numerically and some features of nonlinear wave vibration were discussed.

在研究过程中，首先，考虑阻尼并引入几何非线性项，建立薄壁圆柱壳的非线性波动方程，然后，采用Galerkin方法对波动方程进行转换，选取不同的模态组合，得到相应模态坐标下的非线性微分方程，最后用Runge-Kutta法进行数值计算并对圆柱壳的非线性波动振动特性进行了分析。

scatheless measurement ; numerical simulation ; helium pressure

利用氦气在不同压力下具有不同的状态参数和热力参数，可以通过传热方法测量包壳内的氦气压力。1试验装置和研究方法如图1，把燃料棒浸入到一个高温的池子内，热量会在燃料棒内传递开来，通过测量管壁外面不同位置出的壁面温度，就可以推测到包壳内的氦气压力

The changes of postharvest physiology, storage quality and oxidative changes of fatty acid of unshelled pine nut (Pinus koraiensis Sieb.et Zucc.) 'Korea pine'and shelled pine nut which were cased in 30 μm purple polyvinyl chloride bag and 30 μm white polyvinyl chloride bag, general 40 μm polyethylene bag, respectively for 180 days at ambient temperature(20-30℃).

以朝鲜红松带壳松籽和去壳松仁为试材，将其分别放在30 μm紫色聚氯乙烯袋、30 μm白色聚氯乙烯袋和40 μm白色聚乙烯袋中进行自发气调贮藏，研究了常温下（20～30℃）贮藏180 d期间松籽种仁的生理、品质和脂肪酸氧化变化。

When water temperature was 26.4±0.45℃, salinity 25.50 and pH 8.0~8.2, C. antiquata veliger with an average shell length of 196 μm, after 72 hours of cultivation, reached attachment metamorphosis at a rate of

在水温26.4±0.45℃，盐度25.50，pH 8.0~8.2的条件下，平均壳长196 μm的西施舌壳顶面盘幼虫经72 h培育，幼虫附着变态率为

Low molecular weight by viscometry from 2000 to 9000 can be prepared by degrading 1 g chitosan under this condition.

在此条件下降解1g粘均分子量为146万的高分子壳聚糖，可得到粘均分子量为2×10~3～9×10~3的水溶性低分子量壳聚糖。

The uniform design and PTC are used in the studies on preparation for the chitosan of high deacetylate degree and low viscosity.

利用相转移催化剂与均匀设计法探讨了高脱乙酰度、低粘度壳聚糖的制备方法，找出了最佳工艺条件，在最佳工艺条件下得到了粘度为 2 6.6m Pa· s，脱乙酰度为 99.4 %的壳聚糖

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。