Based on the combination of numerical simulation and simulated experiments, the effect of foam quality, annulus eccentricity, rotation of drilling pipe, and other factors on the flow properties and cuttings transport ability of foam fluid are studied with foam fluid flowing in annulus of horizontal wells.
本文利用数值模拟方法,结合物理模拟试验,研究了泡沫流体在水平环空流动过程中,泡沫特征值、环空偏心度、钻杆旋转等因素对泡沫流动性能以及泡沫携岩性能的影响规律。
The air quality level reached the highest in the history.
城市的空气质量已见持续稳定的改善，空气质量水平达到了历史的最高点。
Fuzzy Evaluating Method for the gas-fired center air-condition system Quality
燃气中央空调质量水平的模糊综合评价方法
Indoor Air Quality of Hotspring Hotels in Guangdong--Study of Indoor Radon;
广东省温泉宾馆室内空气质量研究——室内氡水平研究
impact on the quality of the water and the air
对水质和空气质量的影响
Compared with the previous year, the urban air quality remains unchanged.
与上年相比，城市空气质量基本持平。
The ambient air quality: 90.7% of the bases is at clean level; 9.2% is good, and 0.3% is affected by light pollution.
空气环境质量：90.7％的基地处于清洁水平，9.2％处于尚清洁水平，0.3％受到轻污染；
Influence of precipitation on air quality in several cities,China
降水对中国部分城市空气质量的影响分析
Winds are horizontal movements of air.
风是空气的水平运动。
Homogeneous Equilibrium Model for Gas-liquid Two-phase Flow in Horizontal Pipeline
水平管气-液两相变质量流的均相流模型
Air quality--Vocabulary
GB/T6919-1986空气质量词汇
d emission standard
空气质量和排放标准
multiparameter air quality analyzer
多参数空气质量分析仪
ambient air quality standard
GB3095-1996环境空气质量标准
The air quality in the urban areas picked up gradually.
城市空气质量逐步提高。
testing method for air content of hydraulic cement mortar
水泥空气含量测定法
Air Quality in Cleaning Room of Supply Department:Influence of Hyperboric Water/Gas Blast Gun Working to Clean Endoscope
高压水/气枪清洗内镜对中心供应室清洗间空气质量的影响
With good air quality, the per capita green area is13.6 squire meters and the greening rate is44.8%.
绿化面积人均13.6平方米，绿地覆盖率达到44.8%空气质量良好。
The Research of Quartz Crystal Microbalance Sensor for Indoor Air Quality Detecting;
石英晶振微天平室内空气质量检测传感器的研究