负

Through the research on quintuplicate DCF, some parameters about the performance of the dispersion compensation fiber are analyzed, only in some range of drawbench radius, a big negative dispersive slope can be achieved at the expense of the negative dispersive value.

对五包层色散补偿光纤进行了研究，分析了各个参量对色散补偿光纤性能的影响，发现色散补偿光纤只有在一定范围的拉丝芯径内，以牺牲负色散数值为代价才能获得较大的负色散斜率。

Through the research on quintuplicate DCE some parameters about the performance of the dispersion compensation fiber are analyzed, only in some range of drawbench radius, a big negative dispersive slope can be achieved at the expense of the negative dispersive value.

对五包层色散补偿光纤进行了研究，分析了各个参量对色散补偿光纤性能的影响，发现色散补偿光纤只有在一定范围的拉丝芯径内，以牺牲负色散数值为代价才能获得较大的负色散斜率。

Quotable Quote: I'm not one for parties and stuff like that.

RW和RF整天就知道把nervous挂在嘴边，哼哼，可咋表现的一点不像呢，可能负负得正吧

And the rarefaction wave of small leakage is diagnosed by means of hypothesis test method and fuzzy mathematics theory.

它采用双扭环技术和GPS时钟同步技术实现对传统负压波诊断系统的改进，采用假设检验和模糊数学理论对小泄漏故障负压波进行诊断。

We have to re- examine a modern science technique ethics value, its ethics value has just and takes two heavies, but takes ethics value's severity to perplex mankind should also change from the person and the nature, person and the society, person and one self's three angle occurrence to the evaluation method of modern self-contradict problem of the science and technology ethics.

我们必须重新审视现代科学技术伦理价值，其伦理价值具有正、负两重性，而负伦理价值严重困扰着人类。对现代科技伦理矛盾问题的评价方式也应该从人与自然、人与社会、人与自身三个角度发生转变。

When the light ray refracts at the interface between a traditional positive-refractive-index material and a novel NIM, negative refraction occurs where the refracted ray and the incident ray lie on the same side of the normal line, which means that the emergence of NIMs changes the traditional propagating laws and the basic imaging properties of lenses.

当光波从传统的正折射率介质入射到负折射介质的界面时将发生折射光线与入射光线位于界面法线的同侧的负折射现象。

By assuming the seeds in the vibration plate were distributed with regular tetrahedron,the influences of seeds lay thickness,n,negative differential pressure,Δp,seeds gap coefficient,λ,nozzle diameter, d_k,on suction force values were analyzed.

在此基础上，通过假设种群在振动种盘内呈正四面体空间分布，分析了种群层数n、负压差Δp、间隙系数λ、吸孔直径d_k对种子受力的影响，揭示振动和负压吸种机理。

Positive and negative regulation In negative regulation of prokaryotic gene expression,bound repressor prevents transcription of the structural genes.

正调控和负调控在原核生物基因表达的负调控中，与阻遏物的结合能够阻止基因的转录。

When Bill Russell retired in 1969, the Celtics went from 48-34 to a 34-48 record and missing the playoffs.

1969年，比尔拉塞尔退役的时候，凯尔特人从上年48胜34负跌到34胜48负，连季后赛的门槛都没踏进。

Based on the observation of atomic force microscopy, the etching morphology of faces and sections with different crystallographic significance on α-quartz has been studied. The etching morphology on the natural crystal faces hexagonal prism faces (1010 and 01(average10, rhombohedron positive form face 10(average11, rhombohedron negative form face 01(average11 and the sections between any of the two crystal faces has been observed. It is shown that the etching pit on the same simple form has the same shape, while the orientation of the etching pits can be different. Different simple forms have different shapes of etching pits and the shapes of etching pits on positive form and negative form of the same simple form are also different.

通过对α-石英自然晶面六方柱面10(平均值10和01(平均值10、菱面体正形面10(平均值11与菱面体负形面01(平均值11、以及介于上述自然晶面之间的切面进行腐蚀形貌的观察研究发现，石英晶体同种单形的晶面腐蚀坑形态相同，但方位可以有变化，不同单形的晶面腐蚀坑形态不同；同一单形的正形与负形腐蚀坑形状不同；蚀坑形态能够反映晶体的对称性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。