四组

Results:(1) Exposure to irradiation resulted in the guinea pig's loss of appetite, the exposed skin's congestion and depilation one week after irradiation.

选用健康豚鼠125 只，随机分成空白对照组和四个照射组，每组25只，空白对照组进行假照射，照射组分别给予总剂量为9Gy、15Gy、21Gy、30Gy的鼻部辐射，分别于照射后一周、一月、二月、三月、四月处死动物各5只，在光镜及电镜下动态观察鼻粘膜的病理变化，动物处死前行心脏穿刺采血，离心后取血清，检测IL-1、IL-6、TNF-α的含量的变化。

The inflammatory reaction of hippocampus neurons were observed by electron lens using immunohistochemistry method.Results DR could shorten the escape latency and increase the number of passing plats and the swimming distance of the fourth quad compared with the other quads.

结果治疗组能缩短潜伏期、增加过台次数，第四象限与其它象限游泳距离之间比较也有差异，说明地黄饮子能改善痴呆大鼠空间探索记忆能力，低剂量组已经显效，高剂量组效果更为明显。

Vomiting was reportedin 11% and 22% of patients in the three and four risk factorgroups compared with 6% in the two risk factor group at 0–6h, and 13% and 27%(vs 0%) at 6–24 h, respectively.

在术后0－6h 时段内，三个危险因素组和四个危险因素组分别有11%和22%的病人发生呕吐，而两个危险因素组有6%的病人发生呕吐；在术后6–24 h 时段内，呕吐的发生率分别为13%和27%(比0%)。

A poker hand containing three of a kind and a pair, ranked above a flush and below four of a kind.

手中一组三张同点和一组两张同点的牌，比同花牌大而小于一组四张同点的牌。

Methods: 205 patients were selected for this study and divided into four-handed technique group and traditional oral treatment group randomly. The chair-side time of two groups was recorded respectively.

将205例病人随机分为四手操作组和传统配合组，分别统计两组根管充填时医生的椅旁操作时间。

Then, on the basis of above achieved constituent binary results, thermodynamic properties of 10 ternary liquid alioys (Cd-Bi-Pb, Cd-Pb-Sb, Cd-Pb-Sn, Mg-In-Cd, Zn-In- Cd, Cd-Bi-Sn, In-Bi-Pb, Sn-AgPb,Zn-In.Pb, Al-Cu-Zn), 3 quaternary ones (Cd-Bi-Pb-Sn, Zn-Sn-Cd-Bi, Zn-Sn-Cd-Pb) and 1 quinary. one (Zn-Sn-Pb-Cd-Bi) are predicted. For most of investigated multicomponent systems, the calculated activities are in good with the experimental ones, and in particular for multicompoment immiscible ones, the predicted results are satisfactory and exciting. At the same time, the comparison result between the three equations shows that Wilson equation and T-K-Wilson one are more stable than NRTL one, that maybe is because NRTL equation contains a third parameter, and so ,to some degree, Wilson model and T-K-Wilson model are superior to NRTL model. And also the comparison between local composition models and other models such as Pelton- Flengas?method, Krupkowski formalism, mass action concentration model and Hoch- Arpshofen model shows that local composition models are more convenient and credible.

在此基础之上应用局部组成型模型对10个三元液态合金（包括Cd-Bi-Pb、Cd-Pb-Sb、Cd-Pb-Sn、Mg-In-Cd、Zn-In-Cd、Cd-Bi-Sn、In-Bi-Pb、Sn-Ag-Pb、Zn-In-Pb、Al-Cu-Zn），3个四元液态合金（包括Cd-Bi-Pb-Sn、Zn-Sn-Cd-Bi、Zn-Sn-Cd-Pb）和1个五元液态合金（Zn-Sn-Pb-Cd-Bi）的活度进行了预测，预测效果良好，尤其对Zn-In-Pb系和Zn-Sn-Cd-Pb等多元液-液共存体系热力学性质的预测也取得了令人满意的结果；同时对三个方程的比较分析表明：Wilson方程和T-K-Wilson方程在多元系热力学性质的预测中表现稳定，而NRTL方程由于引入了物理意义不清楚的第三参数，使得其具有不确定性和不稳定性的特点，因此Wilson方程和T-K-Wilson方程较NRTL方程更为优越；此外对局部组成型模型与其它模型（如Pelton-Flengas方程、Krupkowski方程、作用浓度模型和Hoch-Arpshofen模型）的比较表明：局部组成型模型同样是优秀的，甚至在某些方面更为简便和可靠。

The antibiotic substance was isolated and purified primary using the methods of solvent extraction and Thin Layer Chromatography. The results showed that the antibiotic substance contained four components, and the component Ⅰ and Ⅱ had bioactivity against Cmm.

通过乙酸乙酯抽提、旋转蒸发制备的活性物质粗提液经薄层层析分析后，共分离出四个组份，其中仅组份Ⅰ与组份Ⅱ对番茄溃疡病菌表现抑制作用；紫外及可见光区的吸收峰分别为：253 nm、424 nm和443 nm。

Neither tetrose nor mannan group had metastasis of the liver, and the weights of liver in the two groups were significantly lower than in the control.

四糖组及甘露糖聚组均无肝外转移发生，两组小鼠的肝脏湿重也明显低于对照组。

This study attempts to use the statistical techniques of multilevel confirmatory factor analysis to model the measurement of learning school. The analyses follow the four initial steps proposed by Muthèn: conventional CFA of total structure, estimation of between-group variation, estimation of within-group structure, and estimation of between-group structure.

本研究采用多层次验证性因素分析的统计技术来模式化学习型学校的量表，分析依循Muthèn(1994)所提出的四个先行检定步骤：对整体结构做传统的验证性因素分析、组问变异的估计、组内结构的估计，以及组间结构的估计。

Methods: 72 Wistar rats were randomly divided into sham-operation group, SAP group, and SAP previously treated with pyrrolidine dithiocarbamate group.

Wistar大鼠72只，随机分为三组：假手术组；重症急性胰腺炎组；四氢化吡咯二硫代氨基甲酸脂治疗组。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。