查询词典 algebraic fraction

Ethyl cellulose membrane material has produced in physical modification method. The fundamental characteristics of reverse osmosis on EC membrane can be correlated with HPLC experimental conditions. By using EC membrane material as column packing, double-distilled water as mobile phase, the retention times are measured with suitable inorganic and organic compound as solutes.3. Complying with the retention times, the partition coefficient of the solute and the ratio of the surface excess concentration of solutewith the concentration of the parent fraction are calculated .

利用物理改性的方法研制了乙基纤维素(Ethyl Cellulose，简称EC)膜材料，并将其作为高效液相色谱柱的固体填料，以高效液相色谱模拟反渗透实验平衡条件，以水为流动相，选择合适的无机物和有机物作为溶质，测定乙基纤维素对它们的相对保留时间及平衡分配常数K_A′。3。

Secondly, to start with the distribution of temperature field, pressure field and dryness fraction along the injector well, the paper built a steam heat loss forecast model of the injector well, obtains condition the best steam injection pressure and steam injection speed under certain formation.

其次，从蒸汽沿注汽井井筒的温度场、压力场以及干度的分布入手，建立了注蒸汽井井筒的热损失计算模型，得出一定地层条件下的最佳注入压力和注汽速度。确立了井筒的最佳注汽压力和速率。

The problem of measuring flow rate and mass dryness fraction in the same time during thermal recovery of heavy oil is solved by combining orifice plate with uniform velocity tube and on line measuring double parameters of two phase flow of steam and water.

利用孔板与均速管组合在线测量汽—水两相流双参数，解决了稠油热采中同时测量蒸汽流量与干度的难题。

The result of study shows that for the production in Block Can 2X1, the technique for horizontal well steam soak with high dryness fraction, high intension of steam injection, high steam injection rate and short shut-in period is used for a better economic benefit.

研究结果表明，对蚕2X1断块进行开发时，采用高干度、高注汽强度、高注汽速度、短焖井时间的水平井蒸汽吞吐注采工艺，才能获得较好的经济收益。

In the methods cyclic production rate is used as a foundation, cyclic maximum daily average revenue is used as an optimized object and the genetic algorithm is used as a tool for an optimized design of steam injection pressure, dryness fraction of steam, steam injection rate, cyclic injection volume, soak time, and bottomhole flow pressure.

该方法以周期采油量计算为基础，以周期平均日收益最大化为优化目标，以遗传算法为手段，对注汽压力、注汽干度、注汽速率、周期注汽量、焖井时间及井底流压进行整体优化设计。

Forward-feedback control of dryness fraction.

燃料量和给水量的协调控制，快速消除蒸汽干度偏差。

Polymer bonded explosives are particulate composites containing elastic particles in a viscoelastic binder. The particles occupy an extremely high fraction of the volume, often greater than 85%.

高聚物粘结炸药是一种颗粒高度填充的含能复合材料，其单质炸药晶体的体积百分含量通常达到了85%以上。

Through the analysis and comparison with major products in the market, the determined battings' structure (the mass fraction of thermal bonding fibers is 14%, hollow fibers 40%, and common fibers 10%, and fine-denier fibers 36%) can be considered reaching the aim reducing the mass of battings, while keep the characteristics of warmth retention and compression elasticity.

通过与市售主要产品的分析与比较，认为最终确定絮片结构(粘结纤维的含量为14％，中空涤纶的含量为40％，普通涤纶的含量为10％，细旦涤纶的含量为36％)在保证了絮片保暖量和压缩回弹性的前提下，达到了絮片减重的目的。

In course of trial-producing thermo-bonded polyester battings, firstly, the mass fraction of hollow polyester fibers is determined by analysing test results to insure the battings' compression elasticity.

论文在细旦涤纶／中空涤纶复合絮片的试制过程中，首先在保证絮片压缩回弹性较好的前提下，通过分析测试结果，确定中空涤纶的含量应该在40％左右。

Based on the fold beelines model, an apropriate parameter for structured soils, termed structured parameter was presented. This parameter could describe fraction of plastic work stored under compression, and the difference of mechanical behavior between overconsolidated soils and structured soils.

基于这个双段线的压缩模型，提出了一个土的结构性参数，这个土性参数可以反映结构性土压缩过程中塑性自由能和耗散能的比例关系，并且可以表述结构性土和超固结土力学性状的不同。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。