Return migration是什么意思

网络释义

用法例句

The bioleaching of acidified sludge circumfluence treating tannery sludge;

酸化污泥回流的生物淋滤技术处理制革污泥

Based on the analysis of the reason of sedimentation in dig-in basins,it is considered that sedimentation is brought primarily by circumfluence at the basin entrance and density flow.

对内河挖入式港池发生淤积的原因进行分析,认为淤积主要是由口门处的回流及浑水异重流引起的。

The circumfluence is analyzed about its first appearing position and expanding direction.

基于气体动力学基本方程和附面层理论,对汽轮机在小容积流量工况下的末级特性进行了理论分析,着重分析了回流首先出现的位置及它的扩张方向,并结合试验提出了汽轮机末级流场已出现回流的流动模型及对此模型的求解方法。

Turbulence intensity measurements in the backflow region around a spur dike;

丁坝回流区水流紊动强度试验

Study on the Impacts of Off-farm worker backflows in the export region——in-depth of interview of stakeholders in XINHUA and TAIJI town of Qianjiang district,Chongqing;

农民工“回流”对输出地区的影响研究——对重庆市黔江区新华乡和太极乡利益相关者的深度访谈

A new type steam distillation and reflux apparatus;

一种新型水气蒸馏回流仪

Dumb-bell ZnO with high purity and uniform size was synthesized by ultrasonic-assisted reflux method.

采用超声波辅助回流法制备了高纯度且尺寸一致的哑铃状氧化锌。

The titania fibers were prepared by a refluxing process using the above nano-TiO_2 powders as the materials immerging into the NaOH solution.

以钛酸丁酯为钛源,用溶胶乳化凝胶技术合成了纳米TiO2粉末,将其置入碱溶液中进行回流处理得到了纳米TiO2纤维。

This paper presents a pilot experiment involving four plots of landfill with different structures for examining the leachate recirculation effectiveness of different conditions, i.

依据准好氧填埋和厌氧填埋的原理,构建了四个大型模拟填埋场,其中两个进行渗滤液回流,研究了填埋结构对渗滤液回流效果的影响。

Landfill leachate recirculation technology can improve the leachate quality, i.

垃圾渗滤液回流处理后,CODcr去除率最高达95%,在半好氧状态下NH3-N质量浓度降低至10 mg/L以下,渗滤液水质得到改善;渗滤液回流增加了湿度,使有机物的降解速率加快;渗滤液回流处产甲烷速率是不回流处产甲烷速率的2倍多;渗滤液回流处的总沉降幅度可达填埋场深度的20%,而不回流处仅为8%。

With the same inflow conditions,the anticlockwise recirculation regions predicated by Realizable k-ε model between adjacent ribs are larger than those obtained from the other two models.

流场结果显示在相同来流条件下,由Realizablek-ε模型预测的肋块间逆时针方向回流区最大,标准k-ε模型最小。

Dynamic test of solder reflow process by microscope, CCD etal video picture, has been introduced.

通过体视显微镜和CCD等视频设备录制、焊膏回流动态测试方法,观察焊膏回流的整个过程,有助于分析焊膏回流过程中出现的问题,弥补了目前焊膏–锡珠试验只能观察最终结果,而不能对中间过程进行评价的缺点。

There exists universally reflow in the entrance of excavated dock, which is similar to approach channel of low head hydro-junction located in alluvial river.

挖入式港池口门附近普遍存在回流运动,与此类似的情况是冲积河流低水头枢纽的引航道。

A new method using reflowing characteristic of photoresist to planarize PR(photoresist) is presented.

研究了一种利用光刻胶的回流特性去除表面的磨痕,使其表面平整化的方法,结合牺牲层结构可以非常简便地制备出微机电器件中各种悬臂梁结构。