模型 1.(仿制实物) model; pattern 模型所代表的实物 antitype; 模型展品scale model; 飞机模型 model of an airplane; 复制模型 replica; 原尺寸模型 mock-up; 机器的模型 pattern of a machine; 做一个汽船模型 model a steamboat; 他用粘土做模型。 he models in clay.2.(制砂型的工具) mould; pattern3.(模子) model set; mould pattern; layout; type; representation; cast; version; matrix; mock-up; shape
On the other hand , since the ontology - driven ir is the hot field of ir research which shows a promising future , it is necessary to research these two points together and the paper discuss the relevance performance in different ontology - driven ir model and compare them with the mizzaro relevance model 本文以米扎罗四维相关性模型为基础,对不同类型本体信息检索模型式下的相关性表现进行了对比研究,发现在本体信息检索条件下,相关性得到较大提高。
The relationship of chloride ions diffusion coefficient with time conforms to power function according to chloride ions " content in each layer of different concrete . based on the relationship , a mathematical model equation of chloride ions diffusion in concrete was deduced as follow : test results show that chloride ions diffusion coefficient decreases with the water / binder ratio reducing . when fly ash or slag is properly blended , chloride ions diffusion coefficient will also drop 通过取样测得不同技术条件混凝土各层氯离子含量,得到氯离子扩散系数与时间成幂函数关系,据此推出氯离子在混凝土中扩散的数学模型式为:试验结果表明,氯离子的扩散系数随着水胶比的减小而降低,适当地掺入粉煤灰或矿渣粉可以有效地降低氯离子的扩散系数。