查询词典 subsurface

The water quantity of furrow irrigation was half of subsurface irrigation and drip irrigation\'s every time; tomato was cultivated in annual spring, fertilization amount was same in different plots, annual test scheme and test methods were exactly same.

长期定位灌溉试验于1998年开始，灌溉控制上限和下限分别设定为土壤水吸力6.3KPa和40KPa，其中渗灌和滴灌处理一次灌水量为沟灌一次灌水量的1/2；每年春季栽培一茬番茄，各小区施肥量一致，每年的试验方案、试验方法完全相同。

This paper discusses the causes to form subsurface transversal crack in silicon aluminum killed steel slab with straight mold type caster.

论述了直弧型板坯连铸机生产硅铝镇静钢时产生皮下横裂纹的机理及原因，并找出了产生皮下横裂纹的主要原因，w高及铌增加了铸坯的裂纹敏感性。

In order to make the pumps operation normally, the company has developed Sucker Rod Subsurface Pumps for Directional Well.

为了使抽油泵能在斜井中正常工作，我公司研制开发了斜井泵，并已形成系列化。

Sucker Rod Subsurface Pumps for Directional Well This kind of pumps has been taken main percentage in production.

斜井抽油泵斜井在采油井中占有很大比例，常规泵在斜井中使用常出现以下问题

Based on the practice of the use of φ95mm subsurface sucker rod pump in Shengtuo Oilfield in recent years, the causes of the failure of the pump are analyzed, and relevant precautions are put forward:(1)selecting oil wells with sufficient fluid supply for pumping;(2)under the condition of the pump efficiency being the same, the submergence depth of the pump being somewhat larger than that of the small pump, and 450～500m being feasible;(3)adopting Grade H ultrahigh-strength rod string and fixing a sinker bar at the bottom of the rod string;(4)selecting long stroke and low pumping speed, and more than 5m stroke and less than 6min-1 pumping speed being recommended;(5)adopting zirconium oxide valve ball and seat ＋ spray welded plunger ＋ nitrided barrel.

根据胜坨油田近几年采用φ95mm有杆抽油泵提液的实践，分析了造成这种抽油泵失效的原因，包括与其配套的脱节器失效、抽油杆断脱、泵漏、电动机不配套和生产管理不善等。为增强泵的提液能力和工作可靠性，提出5 项预防措施：(1)选择有充足供液能力的油井；(2)在保持相同泵效的情况下，泵的沉没度应略大于小泵，推荐按450～500m设计；(3)采用H级超高强度抽油杆柱，并在杆柱底部配置一定重量的加重杆；(4)采用长冲程、低冲次的参数匹配，推荐光杆冲程大于5m，冲次小于6min-1；(5)为提高泵筒、活塞和阀座的防腐耐磨性，推荐采用&氧化锆阀球和阀座+喷焊柱塞+氮化泵筒&的结构形式。

The rule that governs the moving of fatigue sources from the surface to the subsurface and again to the surface and its influence on the strengthening effect of shot peening are discussed.

探讨了疲劳源由表面进入内部又返回表面的规律性，及其对喷丸强化作用的影响，并提出了内部疲劳极限和表面疲劳极限的概念。

The objective of this study was to compare and differentiate the different removal mechanisms of the dissolved organic matter in the secondary effluent during the granular activated carbon adsorption, horizontal subsurface flow wetland treatment, sand column treatment, laboratory-scale soil aquifer treatment and GAC+SAT.

通过模拟活性炭吸附、砂柱处理、土壤含水层处理、GAC+SAT及潜流式人工湿地处理实验，研究了城市污水处理厂二级出水中溶解性有机物在吸附、生物降解及生物与吸附的共同作用等具有不同DOC去除特点的处理过程中的去除及转化机制。

Wind, precipitation, temperature, and barometric pressure changes affect only the surface and shallow subsurface of the Earth.

地震发生于天气不可能影响到的地壳深层，造成地震的能量也远远超过气候变化所需的能量。

Then, a hypothesis of "double force source" for tectonism is put forward, its main points are: the tectonism is not only the result from the action of tectonic stress, but also the result from the action of "double force source", namely, the tectonic stress and subsurface fluid force including force produced by precipitation, etc.

提出了&双力源&构造变动假设，即构造变动不仅是构造应力作用的结果，而且是构造应力与地下流体力共同作用的结果；二者共同作用因方式不同而产生不同的构造变动；在构造变动孕育与产生过程中，构造应力的作用是第一位的，地下流体力则是调制性的，只有那些能与构造应力增强过程产生力学耦合的地下流体力，才能调制与诱发出构造变动异常并促进构造变动。

UWB SAR for Subsurface-Target identification ; Final Progress rept.

请把身份证明文件给我看一下。

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。