等偏性

By combining some experts' viewpoint and the author' s research, the author discusses such general issues as the use of biased and small sample, the lack of potential variables, exaggerating of statistical diagrams, reflect on reliability and significance test, causality, and so on.

本文从心理学研究过程的内在逻辑出发，探讨了在心理研究中应用统计应该注意的问题和可能遇到的误用现象：有偏样本与小样本的使用，潜在变量的缺失，欺骗性的统计图表，量表信度与统计显著性检验的考量，事后解释的谬误，统计关系与因果关系等。

Results By using optical microscope,the neurocytes of hippocampus in experimental group were observed to denaturalize,tumefy,destroy and disappear.And under electron microscope,the karyon was irregular,nucleoles deviated,chondriosome tumefied,crista collapsed,membrane was damaged,substance cavitated.Such changes were more evident with the increased paroxysm of epilepsy,the parameters between control group and operation group had no difference（P＞0.01）.But make a monofactorial variance analysis among cells' number,area,circumference and integral optical density in different groups,it showed that there were significant differences between optional two groups（P.01;at the same time,the more serious injury in hippocampus,the more powerful GFAP immunoreaction was.

结果： 实验组海马区光镜下可见神经细胞变性、肿胀、坏死及神经细胞脱失改变，电镜可见细胞核形态不规则、有切迹、核仁偏位、线粒体肿大、嵴断裂、膜破损和基质空化等改变，随癫痫发作次数增加上述改变越明显，对照组与手术对照组比较，各参数差异无显著性（P＞0.05），将不同组别大鼠细胞数、面积、周长、积分光密度分别作单因素方差分析，不同组别间均差异有显著性（P.01），同时观察到海马区GFAP免疫反应阳性的胶质细胞随海马损伤的加重而GFAP免疫反应增强。

the authors performed 3d photographic measurement on the technical moves of zhang wen-xiu as an excellent female hammer thrower in china to get relatively comprehensive body movement data by using two jvc3000 high-speed cameras, screened and analyzed the data by using spss software, and revealed the following findings: in terms of such technical parameters as spinning time, spinning track and spinning speed, there were some problems with this player, which restricted the enhancement of her performance, such as the double leg supporting time was shorter than the single leg supporting time; the angle of inclination of the track of various swirls was somewhat too big; the accelerating process was too short; too much attention was paid to acceleration at the single leg supporting stage; the spinning at the double leg supporting stage was too fast; the sustainable accelerating power was not high.

运动生物力学在乒乓球运动中的应用与。。。对投掷运动员运动损伤的调查分析与预。。。《运动防病治病讲座》健身运动的基本。。。都市运动研究：理论传统的界定和中国。。。《运动防病治病讲座》中年人的健身运。。。体校学生特征性运动自信心和运动动机。。。中国优秀沙滩排球运动员运动损伤流行。。。摘要：采用两台jvc3000高速摄像机对中国女子链球优秀运动员张文秀的技术动作进行三维摄影测量，获得较为全面的人体运动学数据；运用spss软件对数据进行筛选和相关分析，发现该运动员在旋转时间、轨迹和速度等技术参数方面存在着一些制约成绩提高的问题，诸如双支撑时间短于单支撑时间、各圈(尤其第1圈)的轨迹倾角偏大、加速过程太短、单支撑阶段过于强调加速及双支撑阶段旋转过快、持续加速能力不强等。

The results show that in the processes of shake 2out and finishing , molding , sand preparation , pouring , melting and coremaking , all the dusts are silica2 containing dust . The respirable dust （ 5 μm） occupies as high as 6915 %~ 78 %. Silica2containing dust in foundry air is not packed by Al. It indicates that silica dust in foundry air is fresh and highly pathogenic.

结果表明，清理、造型、配砂、制芯、熔化和落砂等工序游离SiO2 含量均超过10 %，分散度小于5μm的可吸入性粉尘偏高（6915 %~78 %），空气中矽尘没有Al 的包裹，是新鲜的粉尘，致病性强。

Sensory impairment and urinary dysfunction also had developed, and paraparesis persisted after the hypokalemia was corrected during hospitalization. An optokinetic nystagmus test showed bilateral sick waves and at the same time a cerebrospinal fluid analysis was normal. A blood examination disclosed borderline anti-nuclear antibodies and an elevated serum IgG level. Her cervical spinal cord showed mild swelling and contrast-enhancement when examined by magnetic resonance imaging. Neither a brain stem nor an optic nerve's lesion was found. Based on the above, acute transverse myelitis was diagnosed. All the symptoms present in the patient relieved gradually after 5-days of pulsed intravenous methylprednisolone therapy.

一50岁女性，因为眩晕、前额头痛、视力模糊、恶心、呕吐及两侧下肢无力而求诊，於低血钾矫正后，两侧下肢无力依然持续，并发生胸部以下感觉缺损及排尿困难等现象，视运动性眼振检查显示两侧波形障碍，脑脊液检查正常，血液学检查显示抗核酸抗体及血清IgG指数偏高，显影剂增强磁振造影显示颈段脊髓肿大且略为显影，并无脑干或视神经的病灶，诊断为急性横断性脊髓炎，给予静脉注射类固醇后症状逐渐缓解。

The other two groups are longan and'Longli, a special germplasm', which is a natural hybrid of litchi and longan. The results from RAPD analysis also showed that longan might be the maternal parent and the extremely early maturing litchi types be the paternal parent since'Longli'is closer to longan in the taxnomy. This information would be useful in the distant crossing breeding to fruit of Sapindaceae family.

根据RAPD分析揭示的多态性水平和聚类分析结果及马贵荔×焦核三月红的F〓杂种群体表现出的广泛分离和父本特有RAPD位点分离方式的偏态性，本研究对荔枝的分类学提出新见解，认为广东的三月红、云南的褐毛荔等极早熟荔枝类型（在广州于5月20目前成熟）在分类上可自成一类，其地位应提高到&变种&一级。

Water-soluble air drying alkyd resin is formulated by flax oil acid,trimethylol propane,dimethyl isophthalate,benzoic acid,maleic anhydride and trimellitic anhydride.

以亚麻油酸、三羟甲基丙烷、间苯二甲酸、苯甲酸、顺丁烯二酸酐、偏苯三酸酐为原料合成水溶性醇酸树脂，中和后制得的涂料具有干性好、硬度高、耐水性和贮存稳定性优良等特性。

The results were as follows:the mass fractions of the mineral nutrient elements in a part of the orchard plants were out of balance,especially the mass fractions of some trace elements such as B, Cu, Fe in the plants were higher; in the soilsof most orchards, the problems such as stronger acidity, higher mass fractions of readily available P, lowermass fractions of exchangeable base and lower mass fractions of available trace elements werefound.

结果表明，部分果园植株矿质营养元素质量分数存在失衡现象，尤其是植株的B、Cu、Fe等微量元素质量分数偏高。大多数果园土壤存在土壤酸性强、速效P质量分数高、交换性盐基质量分数低的问题，较多的果园土壤微量元素有效态质量分数偏低。

The seed purity of more than one hundred and thirty samples of six maizevarieties was assayed by using the three testing methods: storage proteins electrophoresis,isozyme isoelectric focusing in acrylamide and examination at field plots. Some importantpoints can be concluded from analyses as spearman order rank correlation on the seedpurity data as follows:First, there were deviations of the real performances to those purities obtained from out or in laboratory testing, even from the examination at field plot that is a routine way. Second, the seed globulin and isozyme electrophoresis, both with characteristics of rapid, cost-effective, devoid of environmental effect and speed, showed consistent purity; while the field-testing gave a higher degree of purity on the high side of cost than that in-lab approaches. Third, a good consistent purity was observed in the field plot and seed globulin testing, whereas inconsistency between field-testing and isozyme process. The last point is that seed globulin electrophoresis be a practical method apt to seed purity testing for maize.

并对130多份样品用三种检验方法(盐溶蛋白电泳、同功酶等电聚焦电泳和田间小区)检测的种子纯度数据作排序相关等统计分析，得到如下结果：室内外检测方法都会与种子真实状况有一定差异，田间种植鉴定与真实情况符合性并不一定最好；盐溶蛋白与同功酶等电聚焦这两种方法检测种子纯度所需时间短，成本低，不受外界环境限制，出结果快，二者的结果没有太大差异；田间种植鉴定成本较高，检测的结果普遍偏高；等电聚焦电泳与田间鉴定的一致性年度间存在差异，而盐溶蛋白凝胶电泳法与田间鉴定的一致性较高；种子盐溶蛋白凝胶电泳法较适于鉴定玉米种子纯度。

Frequency stabilization laser based on transverse Zeeman effect provides several characters such as high stabilization frequency.

基于横向塞曼效应的稳频激光器，频率稳定度高，抗干扰能力强，输出功率大，差拍信号频率低、易于接收和处理，可直接输出相干性和偏振度都很好的线偏振光，便于测量偏振、双折射等物理量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。