查询词典 negative variation

The comparison with the conventional surge tank for a hydropower station with long tailrace tunnel shows that the damping type surge tank with air hole possesses the advantage of higher minimum water level in surge tank with little variation of negative pressure at the outlet of spiral case.

以西南地区带有尾水调压室的某大型水电站为例进行制气式和常规开敞式两种调压室方案的比较计算，计算结果表明，采用制气式调压室可使蜗壳出口最低负压并没有显著变化的同时提高调压室的最低水位，从而减小工程量，节约投资。

The δ〓S value of pyrite, sphelerite and arsonopyrite is in the range of 4. 0‰ and -4. 2‰ with the highest frequency occurring around zero, indicating a uniformed sulfur source. The large variation and mainly negative values (0.2‰～-11. 3‰) of δ〓S for stibnite could be interpreted by isotope fractionation. The carbon isotopic characteristics exhibit a mixing nature of magmatic carbon and organic carbon.

矿床中的热液成因黄铁矿、闪锌矿和毒砂的δ〓S＝4.0‰—-4.2‰，呈塔式分布，δ〓S集中在0附近，表明其成矿体系具有均—化硫的同位素组成，而辉锑矿的δ〓S变化范围较大(0.2‰—-11.3‰)，除一个样品外均为负值，这是硫同位素分馏作用的结果。

At the same, in view of the complication and great variation of heavy oil sewage quality, a new and high effective treatment process is developed.b. Al kind of contradictions in treating the heavy oil sewage are tried to consider systematically and perspectively, and try to avoid the negative effect brought about by the new process.c. When we analyze the contradictions in treating the heavy oil sewage, we combine the oil removal part, suspending material removal part and SlOa removal part to solve the specific problems by taking one anothers advantages and try to do the test repeatedly under the possible conditions.

广泛借鉴国内外稠油污水处理现有的研究成果和经验，并在此基础上努力发展新的思路，针对稠油污水水质复杂、变化较大的特性，探讨开发高效的净水药剂研究具有简捷、高效、耐冲击特点的新工艺；(2)努力从系统的、全面的角度考察和解决稠油污水处理工艺存在的各种矛盾关系，避免新工艺可能带来的负效应；(3)在分析稠油污水处理工艺中各种矛盾关系时，把除油部分、除悬浮物部分、除硬度部分、除二氧化硅部分有机的结合起来，借助各自的优势解决相应的具体问题。

The experiment accuracy test showed that the coefficient of variation of the positive mixed serum was 5.04%, and the CV of negative mixed serum was 1.10%.

实验精确度检测阳性混合血清的变异系数为5.40%，阴性混合血清变异系数为1.10%。

The main conclusions indicated that NDVI values seemed to be turning up in the area during recent 22 years (1982—2003). That suggested the vegetation cover was improved in Guizhou. The NDVI increased in the spring and autumn and decreased in the summer and winter. The spring made the largest vegetation contribution in all seasons. Vegetation cover was different from the area and the variation was positive in the central area but negative around the edges of Guizhou.

结果表明：22年来，研究区植被覆盖呈增加趋势，表明贵州省植被生态环境向好的方向发展；贵州省平均植被覆盖在春季和秋季呈上升趋势，夏季和冬季呈下降趋势，其中春季对植被覆盖总变化量的贡献最大；植被覆盖程度增减因区域不同而异，变化程度呈增加的区域主要位于贵州省的中部地区；变化程度呈减小的区域分布在贵州省的四周边缘。

First of all, modeling image by fractional-order derivative and negative Sobolev space, this paper presents a fractional-order multi-scale variation PDE model, and the proposes the adaptive parameter selection method and obtains the field and scale adaptively algorithm for SAR image denoising.

首先利用分数阶导数以及负指数Sobolev 空间对图像进行建模，建立了分数阶多尺度变分PDE 模型，然后给出了模型参数自适应选择方法，并在此基础上提出了区域、尺度自适应的SAR 图像去噪算法。

As a consequence of this angle variation, the upper side of the car moves in the same sense of the forcing action (as a matter of fact , the negative values of _ indicate a clockwise rotation of the car, observed from the front side).

作为这角度变异结果，汽车的上部移动强迫的行动的同一感觉(实际上， _的消极价值表明汽车的顺时针方向旋转，观察从前方)。

It is shown that the total ozone amount in model RegCM2 is bigger than that from the observed data which result in the negative radiative forcing at top of atmosphere,the cloud cover variation and the temperature varia.

结果发现：对区域气候模式RegCM2而言，用于研究中国地区时，模式中的臭氧总量比实际状况偏大，利用实测臭氧资料后能产生负的晴空辐射强迫，并引起云量变化，导致地表温度变

By measuring the surface vibration of the copolymer sample,we were able to sharply distinguish the positive, negative and nonvibration domains,and monitor the variation of the domain structure during a polarization reversal process.

通过测量有机铁电共聚物 P样品的表面振动，我们可以清楚地分辨出正、负和非振动畴，并记录下极化反转过程中畴结构的变化。

The result shows that air temperature variation at the peninsular can be a good reflection of the Antarctic sea ice oscillations, which means a negative correlation between air temperature and sea ice anomaly near Antarctic Peninsular; a positive correlation between air temperature of Antarctic Peninsular and the sea ice anomaly at Ross Sea.

结果表明，南极半岛地区的气温变化可以反映南极海冰涛动的变化特征：气温距平和南极半岛附近海冰距平存在密切的负相关，和罗斯海外围区域的海冰距平存在正相关关系，能够较好地反映出南极半岛气温与南极海冰涛动以及ENSO之间的紧密联系。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐