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- negative pressure sand washing 负压冲砂
- The negative pressure loop should be noted. 应该注意到负压的腹点。
- This negative pressure phase is of short duration. 负压周期的延续时间很短。
- The Gating Design for Negative Pressure EPC. 负压消失模铸造原料磨衬板的浇注工艺设计
- Intrapleural pressure is usually negative pressure. 胸膜腔内压通常为负压。
- Based on the policy of mill-run and chemical industry heat exchange,a sand treating system suited to negative pressure cavityless casting is designed. 根据选矿和化工热交换原理,设计了一套适合于负压实型铸造的砂处理系统。
- Additionally, we also process such garment finishing business as sand washing, conventional washing and atone washing. 另外，我们也处理服装的后处理问题例如沙洗，传统的水洗以及石磨水洗。
- Operated at sealed negative pressure and designed by GMP. 密封负压操作，按gmp规范设计。
- Therefore, reservoir protection packer sand washing technique is adopted to solve this problem. 因此,研究采用保护油层封隔器冲砂技术,来解决这一问题。
- Base characteristic of silk sand washing process, mostly materials used in fusible interlining was selec ted. 本文根据丝绸砂洗工艺的特点对生产浆点粘合衬布的主要原材料进行了试验筛选。
- Therefore, reservoir protection packer sand washing technique is adopted to solve this problem . 因此,研究采用保护油层封隔器冲砂技术,来解决这一问题。
- Using negative pressure air pipe to ventilate for the being constructed tunnel. 使用负压风管对在建隧道进行通风换气。
- This paper puts forward a underbalance injection sand washing technique with high viscosity fluid carrying sand and nitrogen circulate displacing. 针对这种情况,提出了采用连续油管高黏度液体携砂、氮气循环顶替欠平衡注入段塞式冲砂技术。
- Negative pressure aspirator is necessary to every clinical sections. 负压吸引器是各个临床科室所必备的医疗设备。
- It is used in 76 wells, and it indicates that the technique can be used to solve the problem of high pressure sand control ... 现场应用76口井表明,该技术可较好解决老油井高压防砂难题,应用范围广,施工成功率高,增产防砂效果好。
- Ground fabric and hot melt adhesive and assistant agents of fusible interlining for sand washing silk was found, paste recipe and produce coures was indicated. 通过性能对比,找到了适于生产耐砂洗浆点衬布要求的底布和热熔胶及浆料助剂品种,并指出了浆点衬布生产工艺及浆料配方的制订原则。
- Meanwhile, the company has setup its own toggery factory and the necessary facility workshops of water washing(open to external), sand washing, iron-free and embroider etc. 同时公司下设服装厂及与之配套的（对外）水洗、砂洗、免熨烫、刺绣等车间。
- Main service:Gas foam Acidification,flowback,well cleaning,sand washing,broken down,induced flow;Foam profile control,oil displacement;gas foam less balance drilling. 主要服务项目：气体泡沫酸化、返排、洗井、冲砂、解堵、诱喷；泡沫调剂、驱油；气体泡沫欠平衡钻井。
- A vacuum pump creates negative pressure for correct operation of the filtrate recovery system. 真空泵产生的负压是保证滤液回收系统的正确运行。
- Incipient motion of solid grain in solid-liquid two\|phase flow is often concerned in many petroleum technologies, such as horizontal drilling, gravel-packing and sand washing. 水平井钻井、砾石充填及冲砂等作业都涉及到固液两相流动的固体颗粒起动问题。
