查询词典 null

Kilroy GE%Foster SJ%Wu X Cytokine profile of human adipose-derived stem ceHs:expression of angiogenic,hematopoietic,and pro-inflammstory factors Journal of Cellular Physiology , 2007,null

魏义勇%胡蕴玉%郝伟%张德志%吕荣%白建萍%王军重组人骨形态发生蛋白-2诱导脂肪成体干细胞成异位软骨的研究中华实验外科杂志， 2006，5

The metaphase plate would thus be the null point between two equal but oppositely directed and acting groups of kinetochore tubules.

中期板大概是两个相等而方向相反的放射状着丝点微管群之间的平衡点。

So we must avoid the null labor contract and prevent the dispute of the labor contract.

因此，这个关口把住了，就能有效地避免无效劳动合同的出现，防止劳动合同争议的发生，稳定劳动关系。

Torrisi C The Determinants of Direct Investment in a Small LDC Journal of Economic Development , 1985,null

魏巍贤 外商在中国直接投资的决定因素分析预测， 1997，3

A left null factor of derivative matrix is introduced, and the sliding surface and the control's parameterization can be obtained by sloving strict LMI.

引入导数矩阵的左零因子，使得滑模曲面及控制器参数的求解可经过求解严格线性矩阵不等式获得，在一定程度上简化了LMI方法在奇异系统变结构控制器设计计算中的计算复杂性。

Lenormand R%Touboul E%Zarcone C Numerical models and experiments on immiscible displacements in porous media 10.1017/S0022112088000953 Fluid Mechanics , 1988,null

曾溅辉%金之钧油气二次运移和聚集物理模拟北京：石油工业出版社， 2000，null

A resistor is connected between the output end of the live wire and the output end of the earth wire, another resistor is connected between the output end of the null line and the input end of the earth wire, a neon lamp in a photoelectric coupling switch is connected at the two ends of the earth wire switch in parallel after being connected with the resistors in series, one end of a light sensitive resistor in the photoelectric coupling switch GR2 is connected with the anode DC+ of an integrated circuit IC power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode D3, the cathode of the diode D3 is connected with the triggering pole of the silicon-controlled rectifier SCR in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box.

一种防止地线触点未导通的全能安全插头，包括各带开关的地、零、相三线接线和由零序互感器、脱扣器、放大器、整流器、试验回路和可控硅组成的漏电保护器，所述的火线输出端、地线输出端间连接电阻，所述的零线输出端、地线输入端间串接电阻，光电耦合开关内的氖灯与电阻串联后并联在地线开关两端，光电耦合开关GR2内光敏电阻的一端与漏电保护器内的集成电路IC电源正极DC＋连接、光敏电阻的另一端与二极管D3的正极连接，二极管D3的负极与漏电保护器内的可控硅SCR触发极连接，氖灯和光敏电阻置于暗箱中，暗箱上开一避开光敏电阻的小孔。

After being connected with a resistor in series, the primary input end of a transformer is connected with the output end of the live wire and the output end of the null line in parallel, the secondary output end is connected with the two ends of the earth wire switch in parallel after being connected with another resistor in series, one end of a neon lamp in a photoelectric coupler is connected with the input end of the earth wire E and a secondary end of the transformer, the other end of the neon lamp is connected with the centers of the two resistors, one end of a light sensitive resistor in a photoelectric coupling switch is connected with the anode of an integrated circuit power in the creepage protector, the other end of the light sensitive resistor is connected with the anode of a diode, the cathode of the diode is connected with the triggering pole of the silicon-controlled rectifier in the creepage protector, the neon lamp and the light sensitive resistor are positioned into a dark box, and a small hole which avoids the light sensitive resistor is formed on the dark box.

防止地线触点未导通的全能安全插头，包括各带开关的地、零、相三线接线和由零序互感器、脱扣器、放大器、整流器、试验回路和可控硅组成的漏电保护器，变压器初级输入端串联电阻后并接在火线输出端和零线输出端，次级输出端与电阻串联后并联在地线开关两端，光耦内氖灯的一端与地线E输入端和变压器次级的一端连接，氖灯另一端与二电阻的中心连接，光电耦合开关内光敏电阻的一端与漏电保护器内的集成电路电源正极连接、光敏电阻的另一端与二极管的正极连接，二极管的负极与漏电保护器内的可控硅触发极连接，氖灯和光敏电阻置于暗箱中，暗箱上开一避开光敏电阻的小孔。

Liu SH%Norris DM%Lyne P Volatiles from the foliage of soybean, Glycine max, and lima bean, Phaseolus lunatus: their behavioral effects on the insects Trichoplusia ni and Epilachna varivestis 10.1021/jf00086a050 Journal of Agricultural and Food Chemistry , 1989,null

杜永均%严福顺植物挥发性次生物质在植食性昆虫，寄主植物和昆虫天敌关系中的作用机理昆虫学报， 1994，(2)杜永均%严福顺%韩心丽%张广学大豆蚜嗅觉在选择寄生植物中的作用昆虫学报， 1994，4

It is shown that the asymptotically limiting distribution of the residual cusum test statistic is still the sup of a standard Brownian bridge under null hypothesis.

研究表明如果原假设条件成立，则残量累积和统计量的渐近极限分布仍然是一个标准布朗桥的上确界。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。