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A method of the three-coordinate machine to the measurement of direct error happened to the cylindrical indexing cam contour surface is proposed in the paper.

介绍了用三坐标机测量圆柱分度凸轮廓面法向误差的方法，在此基础上分析了廓面误差对圆柱分度凸轮机构分度误差的影响。

A complete novel assumption is presented. Then, we prove the existence of two nontrivial solutions for a class of second order superlinear difference systems with the help of Minimax principle and Linking theorem in critical point theory,.6. Two applications in physics are given. Firstly, a coupled differential system coming from second harmonic waves is discussed.

利用Ricceri建立的三临界点定理，证明了一类含参数二阶差分方程在某些新的条件下至少存在三个解；随后，利用临界点理论中的极小极大原理和环绕定理，讨论了一类二阶超线性差分方程组多重解的存在性。

After three months of treatment, symptom severity in the psyllium group was reduced by 90 points, compared with 49 points in the placebo group (P=0.03) and 58 points in the bran group (P=0.61 versus placebo).

经过三个月的治疗，欧车前组患者的症状严重程度评分降低了90分，安慰剂组降低了49分（P = 0.03），糠治疗组降低了58分（与安慰剂组相比P = 0.61）。

Symptom severity in the psyllium group was reduced by 90 points after 3 months of treatment vs 49 points in the placebo group ( P =.03) and 58 points in the bran group ( P =.61 vs placebo).

治疗三个月之后，洋车前子组的症状严重度减少90分，安慰剂组减少49分(P =。03)、麸皮组减少58分(相较於安慰剂组的P值=。61)。

First ,it carry on the demonstration analysis to the efficiency of Chinese stock market , judge present efficiency state , then use relevant analysis technology and T examine law in econometrics to analyze the relevant relationship between split share structure and the efficiency of Chinese stock market , and then ,put qualitative analysis on the reason of low efficiency of Chinese stock market and the uncertainty change of Chinese stock market after reform , to investigate the influence degree on the efficiency of Chinese stock market by split share structure .

第三章为股权分置改革对股票市场效率的影响分析，先对中国股票市场效率进行实证分析，判断中国股票市场目前的效率状况，然后运用计量经济学中的相关分析技术和T检验法，对股权分置制度与中国股票市场的效率进行了相关性分析，再从对中国股票市场低效率的成因、股权分置改革后中国股票市场不确定性变化的定性分析中，考察股权分置改革对中国股票市场效率的影响程度。

In addition, trichome of AtCK4 transgenic plants has only two branches or no branching; however, that of wild-type plants has three branches.

另外，野生型的叶片表皮毛为三个分枝，而转AtCK4基因植株的表皮毛多为两个分枝，甚至不分枝。

The allomatric scaling for the wet clonal plants including Phalaris arundinacea Scirpus planiculmis Phragmites australis and Phragmites Jeholensis did not show "1/4-power Rule". The variation of the allometric exponents between vegetative and reproductive ramets was mainly due to the different regulation mechanisms in different development stages. Moreover, the variation of the allometric exponents between plantsin wet or drought environments was the result of the long-time divergent response for ramets to moisture environments.

虉草、紧穗三棱草、芦苇和热河芦苇4种湿地根茎植物分株异速生长规律并不表现为&1／4或1／4整倍数&规律，营养株和生殖株异速生长幂值的差异是不同发育类型的分株生长调节机制不同的结果，水生生境和旱生生境分株异速生长幂值的差异则是分株对生境水因子差异长期趋异响应的结果。

A practical charged membrane which prepared from the blends of sulphonated polyphenylene sulfide/poly can be considered as a 3D lattices. The experimental conductivity was related with a 3D simulation and the result showed the membrane has a transition from insulator to conductor at the ratio of charged components SPPS about 0.144. Obviously, this value falls in the range of a theoretical simulation for a 3D lattices.

由於实际的荷电膜也可看作为三维格栅体系，因此，可用三维格栅体系程序对不同荷电分率膜的电导数据进行拟合，结果表明，对於实际的磺化聚苯硫醚／聚醚碸共混膜，当荷电组分SPPS的分率达到0.144时，共混膜即会从不良导体变为良导体，显然该值落在理论值0.1~0.2，因此，理论模拟结果与实际荷电膜传质的实验数据相吻合。

But there should be no repetition of the wrong ultra-Left policy, which was carried out in 1931-34, of " allotting no land to the landlords and poor land to the rich peasants"

但是，曾经在一九三一年至一九三四年期间实行过的所谓&地主不分田，富农分坏田&的过左的错误的政策，也不应重复。

Chapter four analyses the model that executed in chapter two and chapter three, and sets up the mature reseau analysis method of random convex polyhedral aggregate model of 2d and 3d.

第四章主要对第二章和第三章建立的模型进行有限元剖分工作，建立了一套成熟的二维、三维混凝土随机骨料模型的网格剖分方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。