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- It is significant to assess the risk of aeolian sand disaster(ASD) in city for urban security and sustainable development in sandy area of northern China. 开展风沙灾害危险度评价研究,对促进中国北方沙区城市的安全与可持续发展具有重要意义。
- aeolian sand disaster con-trol 工程沙害
- urban aeolian sand disaster 城市风沙灾害
- Effective discharge fluids and sand con trol after sand fracturing have an important influence on the well test and gas production in the next stage. 气井加砂压裂后,有效的返排压裂液并控制出砂,对下一步的测试和采气工作有重要影响。
- It would be very French, after all, to go predictably out of con trol. 毕竟，可预料的失去控制是非常法国性的。
- It would be very French,after all,to go predictably out of con trol. 毕竟，可预料的失去控制是非常法国性的。
- One hun dred and ninety-three sub jects were assigned to an exper i men tal and a con trol group. 实验处理是实验组接受运动行为改变介入计划活动，而对照组则不接受任何的实验处理。
- The testing tool was applie d to more than 200 injection wells in 19 98 and 1999 respectively for profile con trol. 1998年和1999年在濮城油田应用该测试仪分别对200多口井进行调剖取得明显效果。
- The design of the high speed rapier loom con trol system based on TMS320LF2402 chip was described. 介绍以DSP芯片TMS320LF2407为核心的高速剑杆织机控制系统的设计。
- The interface rub characteristic between geogid and aeolian sand was measured with the pulling out experiment. 通过拉拔试验测定土工合成材料与风积砂的界面摩擦特性。
- The results indicate that using cement stabilized aeolian sand and macadam, as base course for road is feasible. 试验结果表明,水泥稳定风积砂碎石做基层在公路上的应用是可行的。
- Conclusion The method is proved to be simple, sensitive, precise and reproducible and can be used for the quality con trol of DOL. 结论所建立的方法简便、灵敏、准确、专属性强,可作为该制剂的质量控制方法之一。
- The time of the earlier two layers of aeolian sand formed corresponds with the New Ice Age. 前两次风成沙在形成时代上可能与第一新冰期相对应，反映了沙漠的扩张状态。
- The well path con trol and drilling fluid technology good experience is introduced,It can use for reference to similar well. 阐述了超深侧钻井眼轨迹控制、钻井液技术等方面的成功经验,对同类井的施工有一定借鉴意义。
- With a new horizontal saltation displacement vector, the initiation and evolution of aeolian sand ripples is simulated. 本文采用一个新的颗粒跃移矢量表达式，模拟了风成沙波纹的形成和演化过程。
- The principle of the application of STD bus ind ustrial con trol computer to acontrol systemfor wet superphosphate process is prescnted. 介绍了STD总线工控机用于湿法磷肥生产控制原统的原理。
- At last,taking the con trol system for the traffic lights as example,the whole process and its correctness have been achieved and proved. 以交通灯控制为例全过程地实现和验证了所提出思想的正确性和可行性。
- Study Progresses and Prospect on The Ecological Characteristics of Soil-inhabiting Microorganism in Soil Forming Process of Aeolian Sand Soil. 风沙土成土演变过程中土壤微生物生物学特性研究进展与展望
- This paper much make a research on hazard analyse and Critized con trol point (HACCP)which is applicated in school milk production. 本文主要研究探讨了危害分析及其关键质量控制点管理系统(HACCP)在学生饮用奶生产过程中质量控制方面的应用。
- Shape characteristics of the natural aeolian sand ripples and their relations with the physical characteristics of surface sand. 自然风成沙纹的形态特征及其与地表沙物理性状的关系
