负角

The results show that a complicated oscillation will happen when the angular frequency increases.

研究结果表明，负折射率材料的热发射率随角频率的变化呈现复杂的振荡现象。

It was also observed that the rougher asperities damaged gradually by shearing and wearing in small region and the surface in contact increases with the increasing of normal stress and shear displacement.

因此，对任一条不规则的节理粗糙线，可以通过非平稳部分的正倾角或负倾角和平稳部分的平均粗糙角的结合来定量描述其表面粗糙度。

Results show that the changes of the ratio between the thickness of positive angle layers and the negative angle layers have an effect on the deformation of the structure under the same electric loading.

结果表明，当复合材料中正的铺层角和对应的负铺层角的厚度比改变时，在相同电载荷作用下对结构的变形有较大的影响。

The conventional tail must be at a negative angle of attack, and the Canard tail at a positive angle.

通常的尾翼必须处于负迎角，而鸭式尾翼则为正迎角。

When optical axis is perpendicular to the surface normal, it is found that the Brewster angle is decreased with the increase of frequency in the negative pass band.

第二部研究了各项异性异向介质的Brewster角，首先研究了主轴垂直于界面的情况，发现在异向介质负通带内，Brewster角随着频率增加而减小。

And the distribution of the magnetic shear angles exhibits the hemisphere sign rule as the asymmetry of helicity. In our dataset, 53% of the active regions in the south hemisphere have positive shear angle and 62

磁场剪切角具有南北半球符号的反对称手征性，在南半球有53％的活动区的磁场剪切角是正的，而在北半球有62％是负的。

The associated factors, clinical signs, treatment and prognosis were discussed. Result: Nine patients (6 female and 3 male) were included in this study. All of the patients were associated with myopia, ranging from -0.5 diopters to -5.0D. Gonioscopy revealed a dense homogeneous pigmented band seen over the entire circumference of the trabecular meshwork in all patients; however, no patients with iris transillumination defects were detected. Two of the patients developed pigmentary glaucoma and were treated with β-blocker, miotics and argon laser trabeculoplasty.

结果：九病例中有六位女性及三位男性，所有的病例皆有近视，分布於负零点五至负五点零屈光度，所有的病例在隅角镜检查皆可观察到浓厚的色素沈积在小梁组织，然而在这些病例并没有发现到有典型之虹膜透光缺损：其中有两例后来发展成色素性青光眼，以乙型阻断剂、缩瞳剂和氩氮雷射小梁整形术治疗后，病情控制稳定。

Recent developments in the research on the geology and geochemistry of the newly-discovered clayey breccias at the lop of the Xiaochaka Formation in the Juhuashan, Xiaochaka and Shishuihe areas, Qiangtang Basin, northern Tibet have disclosed that mineral compositions, textures and structures, occurrences and sectional architectures of the clayey breccias agree well with those of the paleo-weathering crust in these areas. Compared with the bedrocks, the paleo-weathering crust is characterized by the leaching out of CaO and CO2, and relative enrichment of SiO2, Al2 O3, Fe2O3, K2O, Na2O, MnO and P2O5. The clayey weathered residues in the paleo-weathering crust are characterized by marked enrichment of REEs, much higher contents of LREEs than those of HREEs, markedly positive Ce anomalies and negative Eu anomalies, and a noticeable increase in other element contents besides Mo, Sn and U from the clayey weathered residues.

对最近在藏北羌塘盆地菊花山、肖茶卡、石水河等地区新发现的肖茶卡组顶部的粘土质角砾岩的地质、地球化学特征研究表明：其岩石矿物成分、结构构造、角砾层产状及剖面演化序列等与古风化壳的形成及其特征较为一致；相对于基岩，古风化壳的主量元素表现为CaO、CO2的淋失和SiO2、Al2O3、Fe2O3、K2O、Na2O、MnO、P2O5等不同程度的相对富集；古风化壳中的粘土质风化残积层的稀土元素具有明显的富集，表现为LREE含量远大于HREE的特征，存在明显的Ce的正异常以及Eu的负异常；微量元素除Mo、Sn和U外，粘土质风化残积层的其余元素含量均有明显的增加。

There was a negative correlation between the overall magnitude of acceleration and both the center-edge angle and the acetabular head index, and there was a positive correlation between the overall magnitude of acceleration and both the acetabular roof angle and the Sharp angle.

在所有的加速度量值与CE角和臼头指数之间有负相关，在所有加速度量值与臼顶角和Sharp角之间有正相关。

Cavitations is the major problems of designing water hydraulic valve, understanding the relationship between shape of valve and cavitations , avoiding cavitations is extremely important, this paper, the numerical simulation and visualization research of flow field is carried out to research relation between the flow field of poppet valve and the length of valve seat by finite volume numerical method.

气穴是研制水压阀存在的主要难题，认识阀口形状与气穴的关系，避免产生气穴现象是极其重要，本文应用有限体积数值计算方法针对阀座倒角长度变化对水压阀阀道内流场的影响进行数值模拟和可视化研究，得到了一些有益的结论：倒角长度的改变对阀口间隙以及阀芯锥面与柱面相接的地方的负压会产生比较大的影响

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。