如果您想要使用触发器、聚合函数、外部联接、视图以及其他SQL功能,HSQLB都可以满足您的需要(大部分轻量级关系数据库无法做到这一点)。
If you want triggers, aggregated functions, outer joins, views, and other SQL features, they are all there (something you won't get from most lightweight relational databases).
影响聚合物包膜肥料养分释放的因素主要有:膜厚、颗粒半径、扩散系数、养分组成及其溶解特性。
The factors that influence the nutrients release behavior are as followings: membrane thickness, granule radius, diffusion coefficient, nutrients composition and nutrient dissolving property.
结果表明,聚合物驱可有效地提高油层的动用状况,扩大平面波及系数,减小层间差异,使层内纵向动用更加均匀。
Results show that polymer flooding can improve the producing reserves effectively, extend the plane sweep efficiency, reduce the difference between layers and balance the in-layer vertical producing.
聚合物驱油技术是通过提高水的波及系数提高原油采收率。
Polymer flooding technology enhances oil recovery by increasing the sweep efficiency of water.
通过测定聚合过程中单体在两相中的分配系数,认为双水相聚合为一个在两相中同时聚合的反应。
The results of the partition coefficient of the AAm during the polymerization showed the polymerization took place in the two phases at the same time.
结果表明聚合方法对树脂形态、粒径、分散系数和聚集态结构均有一定程度的影响。
The results show that the morphology, the state of aggregation and the particle diameters of the resin are Connected closely with the method of polymerization.
不含添加剂的聚氨酯聚合物有极高的摩擦系数。
Polyurethane polymer containing no additives has a high coefficient of friction.
通过分析这种新型聚合物砂浆的热物理特性,提出了热传导系数和比热容的计算公式。
Calculation formulas of conductivity coefficient and specific heat were put forward by analyzing the heat physical characteristics of the new polymer mortar.
本文从阻力系数与孔隙系数角度出发,研讨了聚合物溶液在砂岩孔隙介质中降低流体流动度的机理。
This paper deals with mechanism of the decrease of the mobility of a polymer solution when it flows through a porous medium by means of resistance factor and porosity factor.
乳化剂量和加料速率分别通过影响胶粒数和总体反应速率系数而对胶粒溶胀和壳层聚合反应产生影响。
The emulsifier content and feed rate affect latex swelling and shell polymerization by the making a change of latex number and total reaction rate coefficient respectively.
电光聚合物的折射率和极化后的电光系数是聚合物波导的重要参数。
EO polymer parameters such as refractive index and polarized coefficient are the essential for appliance of EO polymer apparatus.
试验和计算实例表明,随着聚合物浓度的增加,阀球开启滞后角度增大,泵充满系数降低。
The experiment and calculating example show when concentration of polymer solution increases angle of lag of valve ball opening increases and pump admission coefficient drops.
对提高光纤光栅压力灵敏度系数的聚合物封装光栅的新方法进行了研究。
This paper studied the new method of the polymer packaging grating to improving the optical fiber grating stress sensing sensitivity coefficient.
相对孔隙系数值可用以表征聚合物溶液流经孔隙介质时聚合物分子尺寸与滞留作用的关系。
Relative porosity factor value can be used to characterize the relation between the molecular size of the polymer and the its retention in the flow of polymer solution through porous media.
聚合物和涂层材料的渗透系数(P)、扩散系统(D)和溶解系数(S)是影响聚合物阻隔性能的关键参数。
The permeability (P), diffusion (D) and solubility (S) coefficients for polymers and coatings are key parameters that affect a polymer's barrier performance.
介绍了反应物在聚合物膜中扩散系数的测定方法。对于聚合物修饰电极上反应机理的研究提供了有力的指导。
Measuring method of reactant diffusion coefficient in polymer film was introduced. This would provide potent guidance for researching reaction mechanism.
首先,本工作开发了一基团贡献模型用于预测常压下聚合物熔体的导热系数。
The first one is a group contribution model for the prediction of the thermal conductivity of polymer melts.
用数值模拟研究手段对七点法井网、五点法井网以及单油层、多油层聚合物驱的波及系数及驱油效果进行了模拟;
The sweep efficiency and oil displacement effect of polymer flooding in seven spot and five spot patterns for single and multizone reservoirs were simulated by numerical simulation.
依据流体动力学的剪切理论,确定预塑过程聚合物熔体的阻尼系数。
Based on the shear theory of hydrodynamics, the damping coefficient in plasticizing process is determined in this paper.
报道了一种测量聚合物薄膜电光系数的简单方法。
A simple interferometric method for measuring the linear electro optic coefficients of poled polymer films is described.
进一步论证了均相理想聚合体系的最终转化率仅是温度系数。
It was demonstrated further that the final conversion of polymerization in homogeneous ideal systems is only dependent on reaction temperature.
研究了氚在金属材料、陶瓷材料、玻璃、弹性材料和聚合材料中的溶解度系数、扩散系数和渗透率;
The permeability, solubility and diffusivity of tritium through metals, ceramics, glasses, elastomers and polymeric materials were studied.
通过聚合物溶液在不同模型中的驱油实验,研究了聚合物溶液的衰竭层效应和粘弹性效应对驱油效率和波及系数的作用机理和作用程度。
The mechanism and the extent of action of polymer solution's depleted layer effect and viscoelastic effect on displacement efficiency and sweep coefficient.
本文提出了聚合釜相似放大的简便计算公式.并经生产验证是可靠的,所取系数、效率是可行的。
This paper reports a simple similar amplification of polymerization tank. The formula is reliable by production. The coefficient and the efficiency are feasible.
用溶解度不同的活性物释放数据对方程进行拟合并求得各组分在多孔聚合物基质中的有效扩散系数和溶解速率常数。
The model was used to fit the release profiles of three actives with different solubility, and the diffusion coefficient and dissolution rate constant were obtained.
聚合物驱提高原油采收率的主要机理是扩大波及系数,聚合物驱后油层波及状况的研究是聚合物驱效果评价和进一步提高采收率的基础。
Research on sweep conditions of the oil reservoir after polymer flooding is the foundation of effect evaluation and further enhancing oil recovery.
建立基于兰彻斯特方程的聚合级实体损耗模型的关键在于损耗率系数的确定。
The key of aggregated force attrition modeling based on lanchester equation is the calibration of attrition coefficient.
因此,如何确定单体的扩散速率和聚合速率系数在优化器件性能方面至关重要。
Hence, how to determine the diffusion and reaction coefficients is of significance on the improvement of devices performance.
因此,如何确定单体的扩散速率和聚合速率系数在优化器件性能方面至关重要。
Hence, how to determine the diffusion and reaction coefficients is of significance on the improvement of devices performance.
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