查询词典 sand bear

Sand production at oil wells on conventional plunger pump plunger often sand, sand buried rod, tube and plunger pumps sanding situation, etc., so that premature pump failure.

在出砂油井上，常规柱塞抽油泵时常出现砂卡柱塞、砂埋抽油杆、砂磨泵筒和柱塞等现象，使抽油泵过早掉效。

Insert a plug into one of the tube ends, pour dry sand inside the tube, tap gently tocompact the sand inside and place another plug on the other end, the sand helps to avoid

插入一个栓进管端之一之内，浇注里面的干砂管，逐渐地轻打使装满砂内部而且放另外的一个栓在另一端

The paper expounds systematically the strengthening mechanism,design calculations,construction process,quality control and quality inspection during cohesionless soil subgrade treatment by vibrating sunken tube sand pile,based on the practical application of vibrating sunken tube sand pile in sand-wash-and-filling subgrade treatment of Ganjiang Nanda Road.

结合振动沉管砂桩在赣江南大道冲填砂路基处理中的应用实践，系统地阐述振动沉管砂桩在砂性土地基处理中的加固机理、设计计算、施工工艺、质量控制及质量检验。

The results showed: the major causes were obstacle of seed vessel, seed embryo dormancy and post-maturation; the major methods were treatments of hypothermal stratification and growth regulators; naked layer stratification and sand layer stratification had cosistent effect on relieving seed dormancy; hypothermal stratification with GA3 500~1000mg/L for days could relieve seed dormancy, compared to sand stratification it shortened 30 days, and its germiation percentage was higher than that of sand stratification.

结果表明，引起砂梨种子休眠的主要有种皮障碍、种胚休眠和种胚后熟；而解除休眠的主要方法为低温层积处理和植物生长调节剂处理。裸层积和沙层积在解除种子休眠上的发芽效果是一致的，使用GA3溶液浸种，不能完全打破种子休眠，用GA3 500~1000mg/L低温层积30d即可解除种子休眠，比直接沙层积缩短30d，其发芽率比直接沙层积高。

The source of slack deposits is the loess of the upper reach where the soil erosion is very heavy, while the source of sand is the airslaked rocks of mountainous area in the upper reach. 3. There were several "interbedded slack deposit-aeolian fine sand layers" in both LHT and YWC profiles, the silt layers are slack water deposits and the aeolian fine sand layers were carried by the NE direct wind.

在LHT、YWC和YYC剖面中，磁化率均呈现出平流沉积层中偏低，而在风吹沙和中、粗沙层中偏高的特点，其原因是平流沉积层的物质来源多为上游黄土区的土壤侵蚀和水土流失带来的土壤，而沙层的物源则是上游基岩山区的岩石经风化、搬运而来。

The straw-checkerboard sand barriers paving robot can insert grass to establish straw-checker sand barriers that prevent wind and fix sand.The robot is used in desert,and the trafficability in desert is the key factor of its properties.

引言由于沙漠中沙土松散，附着力小，道路阻力大，因此草方格铺设机器人在沙漠中的通过性是防风固沙草方格铺设机器人研究课题[1]的关键。

Based on the experiments of physical properties of desert sand,the driving force of running desert wheeled cross-country vehicle were obtained by calculating force between tire and sand.The experiments about pressuring grass resistance of lengthways lay out grass mechanism were done.According to the vehicle terramechanics theory,desert trafficability of straw-checkerboard sand barriers paving robot was analyzed.

本文在测试沙土物理特性和选择沙漠车的基础上，依据车辆地面力学理论，通过分析、实验和计算草方格铺设机器人的行驶阻力以及牵引车的牵引力，讨论防风固沙草方格铺设机器人在沙漠中的通过性。1沙土特性与牵引车参数1.1沙土的物理特性该机器人是通过轮胎与地面的相互作用力推动其前进。

Afterwards has not waited on to confuse the city prodigal sons, after I made the airplane which the typhoon first returned to Beijing, hugged can with the sand beach boy, Quest the excited mood which met in Beijing, alit from a plane on with the sand beach boy, Quest has related, but the sand beach boy, Quest in Beijing and the company discussed an official business, our appointment has just missed, lost the mood was unable the analogy!!!

后来也没有等上迷城浪子，我做上了台风后第一架回京的飞机，抱着能和沙滩小子、Quest在北京相会的激动心情，下了飞机就和沙滩小子、Quest 联系了一下，不过沙滩小子、Quest 在北京和公司谈点公事，我们的约会又失之交臂了，失落的心情无法比喻！！！

How to realizeprocess control of Furan resin-bonded sand self-curing technology has been briefly expounded combining practi- cal production with several sections such as raw material preparation, mixing sand, molding, coremaking,recla- mation and technological equipment design which have been depended upon to work out a series of document of techndogy and technique of furan resin-bonded sand self-curing process operational reules, technology regulations and acceptance standard of raw materials to play important role in guiding production on the spot.

本文结合生产实际情况，从原材料的准备、混砂、造型、制芯以及再生过程和工艺工装设计等几个方面，简要阐述了如何对呋喃树脂自硬砂生产工艺过程进行质量控制，并且在此基础上制订了工艺操作规程和工艺守则以及原材料验收标准等一系列有关树脂自硬砂的工艺技术性文件，对现场生产起了重要的指导作用。

How to realizeprocess control of Furan resin-bonded sand self-curing technology has been briefly expounded combining practi- cal production with several sections such as raw material preparation, mixing sand, molding, coremaking,recla- mation and technological equipment design which have been depended upon to work out a series of document of techndogy and technique of furan resin-bonded sand self-curing process operational reules, technology regulations and acceptance standard of raw materials to pl...

呋喃树脂自硬砂；生产工艺过程；质量控制；本文结合生产实际情况，从原材料的准备、混砂、造型、制芯以及再生过程和工艺工装设计等几个方面，简要阐述了如何对呋喃树脂自硬砂生产工艺过程进行质量控制，并且在此基础上制订了工艺操作规程和工艺守则以及原材料验收标准等一系列有关树脂自硬砂的工艺技术性文件，对现场生产起了重要的指导作用。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。