查询词典 sloping fields

According to instantaneous velocity fields and vorticity fields measured with SPIV, detailed analysis of the evolution of tip leakage vortex at both design and near stall conditions is presented in this thesis and the different phases of the evolution of the tip leakage vortex, the formation, becoming unstable and the interaction between small-scale vortices and the mainstream can be clearly observed in the experiment results.

SPIV测量结果表明压气机转子叶尖泄漏涡在设计和近失速状态下均存在形成、发展壮大和失稳分裂的演化过程。

In this paper, according to the theory of electromagnetic fields, firstly, electromagnetic field of large and medium asynchronous motor is calculated from the angle of coupled fields, secondly, the end voltage of the stator is taken as constraint condition and starting current in stator is iterated in the numeral computation process, finally starting current and starting torque at rated voltage are gained, and by comparing calculation results with test results ,starting performance of large and medium asynchronous motor meet the demand of project practice.

本文根据电磁场理论，从耦合场的弱耦合角度首先计算了大中型异步电动机的电磁场，在电磁场的数值计算过程中，以定子端电压为约束条件，对定子起动电流进行了迭代计算，得到了额定电压下的起动电流和起动转矩，并把正弦时变场计算结果与实测结果进行对比，表明大中型异步电动机的起动性能的计算结果满足工程实际的需要。

The age structure of striped stem borer, Chilo suppressalis, overwintering in different type of rice fields and wild rice fields was investigated, and post winter feeding and pupation dynamics were compared among larvae in different instars.

调查了不同类型稻田及茭白田中二化螟的越冬年龄结构，比较了不同龄期幼虫之间在冬后取食与化蛹动态方面的差异。结果表明，越冬虫龄以双季晚稻田中明显较低，中稻田与茭白田中相对较高。

The result indicated that suitable thickness of paddy soil is about 15cm,and for dry arable land it should not be lower than 20cm;The alluvial rivers parent material is the best one to influent the output,the rice fields is the worst with the parent material of slate ground,while the dry and plough land is the worst for its purple sand shale parent material;The paddy rice is best with the acid soil,and the dry crop is the best with the neutral soil;The obstacles horizon exist in 35.2%of the rice fields in research region,and many for middle or top digit obstacles.

结果表明，水稻土的适宜耕层厚度为15 cm左右，旱耕地适宜耕层厚度应不低于20cm；成土母质对产量的影响以河湖沉积物母质最好，稻田以板页岩母质最差，旱耕地以紫色砂页岩母质最差；水稻以酸性土最好，旱作以中性土最好；研究区稻田有35.2%的存在障碍层，且多为中、高位障碍，是影响水稻产量整体提高的主要因素；水稻和旱作都以壤土为最好，其中，稻作怕砂，旱作怕粘；水稻土适宜的容重为1.00—1.29 g/cm~3。

Because the governing equations have the relationship of translation symmetry, the displacement fields and the electrical potential fields can be represented by Bloch theorem to get the periodical structural governing equations.

将应力和电位移场以位移和电位场表示，即可利用层与层间的位移、应力、电位和电位移必须连续等条件求得转换矩阵，再满足上下表面的边界条件即能求得出压电周期叠层板波传频谱。

The best indication of their potential come from the Tupi and Lara fields, part of the crescent of fields including Guara, which together hold an estimated 8-12bn barrels of recoverable oil, according to Petrobras, making them among the biggest oil strikes of recent decades.

有关这些油田潜在储量的最佳信号，来自Tupi和Lara油田，它们是包括Guara在内的半月形分布的一连串油田的一部分。据巴西国家石油公司称，这些油田的总储量估计有80至120亿桶可采石油，这让它们跻身于数十年来最大石油发现之列。

From our result, we can see that unphysical components of the gauge fields are contributive to the vacuum energy and it just cancel out ghost fields contribution to the vacuum energy.

从计算结果来看，规范场的物理分量和非物理分量对真空的零点能都有贡献，而规范场的非物理分量对真空能量的贡献，不仅不包含M-C-S规范场的质量项，而且恰好与鬼场的贡献相抵消。

Government says it will try to squeeze more output out of the North Sea's oil and gas fields, tinkering with the tax regime to encourage exploration of some fields currently considered unviable.

英国政府表示，将努力增加北海的石油和天然气产量，同时，计划通过税收手段鼓励在某些目前认为无法开采的地区加大勘探力度。

Variational inequality problem is one of the most important optimization problems, it arises in a widely fields of signal processing, system identification, filter design, robot control, economic science, transprotation science, operational research, and nonlinear analysis fields.

变分不等式问题是一类重要的优化问题，它广泛地出现在信号和图像处理、系统识别、滤波设计、自动控制、经济科学、运输科学、运筹学，非线性分析等领域。

At the latter stage of sugarcane growth, total N, OM, Cl(superscript -) sugarcane fields are lower than in 75 ton treatment in sugarcane fields. Soil fertility, OM and HA content, and catalase and polyphenol oxidase activity are higher in the four vinasse treatments than in CK1 and CK2 treatments. Sugarcane plantation absorbs vinasse nutrient and purifies soil environment when treated with vinasse.

说明与施用化肥或不施肥处理相比，蔗地施用废液有提高土壤肥力和有机质、腐殖质含量的作用，但也使施用初期过氧化氢酶和多酚氧化酶活性异常升高，施废液的土壤种植甘蔗对废液养分吸收和环境净化有一定作用。

The statistical analysis of this large set of mutations has led us to propose a diagnostic strategy that should help with the molecular work-up of optic neuropathies.

这一大系列基因突变的统计学分析引导我们提出一个诊断策略，可以帮助我们对视神经病变进行分子学的诊断检查。

The results show that the pipe grouting changes the mechanical parameters of surrounding rocks to achieve the security of engineering objectives by reinforcing surrounding rocks and bolcking the water.

研究表明：小导管注浆一方面改变了围岩的力学参数，另一方面利用浆液的固结特性可以实现堵水和加固围岩的工程目标，使隧道在开挖过程中的安全得到保障。