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- The best performance for MeOH synthesis is C301 catalyst in low pressure. 二甲醚合成中,不同脱水催化剂反应性能不同。
- The improvement of casting process was conducted to eliminate the defects in F3 cylinder cap in low pressure casting. 针对低压铸造F3汽缸盖出现的铸件缺陷,在铸造工艺上进行了改进。
- The weight of the disc/piston is very helpful, especially in low pressure systems. 阀瓣/活塞压铁非常有用，特别是对于低压系统。
- Tapping provided in low pressure side of body to permit convenient, economical attachment of equalizer line. 在阀体的低压侧具有攻丝开孔,便于方便、经济的连接平衡管。
- Under the BCS mechanism, we use Anderson model to explain CeCu2Si2 supereon-ductiv critical temperature change with pressure in low pressure range. 在BCS机制下,采用Anderson模型,在低压区域内,我们解释了CeCu_2Si_2的超导临界温度随压力变化的实验结果。
- Sand-cleanout with foam fluid can effectively reduce leakage of flushing fluid in low pressure oil wells, without the need of any other LCM materials. 针对漏失井使用水基冲砂洗井液不返液或漏失量大的问题,不用添加任何化学堵漏剂,使用低密度泡沫流体冲砂洗井,可有效地减轻低压井中冲砂液的漏失。
- Replacement Method and effects of 4# tower wall in low pressure spiral wet gasholder without intermission are introduced and analyzed. 介绍和分析了在不停运的情况下,整体更换低压螺旋湿式柜4%23塔壁的方法和效果。
- The casing swabbing is often used in low pressure,low permeability and low production rate oilfields for the most economical production. 三低油田常采用套管抽汲方法达到最经济的采油目的。
- This paper deals with the flowing phenomena of liquid metal in lift tube,crucible,and mould cavity in low pressure casting. 分析了低压铸造中液态金属在升液管、坩埚、型腔中的流动现象。
- In this paper,Study of cation exchange column and selection of elution system in low pressure ion chromatography are introduced. 低压离子色谱为作者提出的新型色谱体系;本文介绍了在低压离子色谱中专用阳离子交换树脂的研制及洗脱体系的选择情况.
- New route for preparation of cystine from hair by means of fast hydrolysis in low pressure and seal conditions has been investigated. 本文研究了以毛发为原料,通过低压密闭快速水解法提取胱氨酸的新途径;
- Some problems of the orifice flowmeter in use is poin ted out. 指出了孔板流量计在使用中存在的问题；
- Firstly, we use the high efficient manual suction pump to keep the fresh food in low pressure status, so that to prevent bacilli living. 第一，利用高效能的手动抽气泵可使保鲜的食物处于低氧低压状态，细菌和微生物不易滋生。
- The young man carved a figure in low relief. 这个年轻人刻了一座浅浮雕人像。
- The bolt load is calculated to meet the operating load Wm or the gasket seating load Wm, whichever is greater. In low pressure applications the seating load is larger. 需要计算螺栓负载,以符合更大的工作负载Wm或垫圈座负载Wm的需要。在低压应用中,垫圈座负载更大。
- An ornament carved in low relief. 浮雕装饰刻在浅浮雕上的装饰
- Abstract This paper has expounded the important role of liquid surface pressure control system in low pressure and differential pressure diecast to improve castings quality. 在低压铸造及差压铸造生产过程中，液面加压控制系统对提高铸件的内在质量有着极为重要的作用。
- In medals and medallions the figures are in low relief. 奖章和奖牌上的人像系低浮雕。
- In view of flushing fluid enter and contaminate formation during heat-washing paraffin in low pressure well,developed reservoir protector by heat-washing paraffin. 针对地层压力低,热洗清蜡时洗井液大量进入地层,严重污染油层问题,研制了热洗清蜡油层保护器。
- Being in low spirits; dejected and disheartened. 沮丧的情绪低落的; 垂头丧气的和气馁的
