查询词典 primary difference

Result These 126 patients with primary carcinoma of gallbladder amounted to 2.7% of 4627 cases of surgically treated diseases at the same period of time. The rate of radical was 38.9% and that of palliative resection 30.9%. The average survival time in patients underwent radical waws 8.8 months while that in patients underwent palliative resection 3.3 months. There was a signicant difference in average survival time between these 2 groups of patients.

结果126例胆囊癌占同期胆道外科疾病的2.7%（126/4627），占同期普外疾病的0.76%（126/16478），根治性切除率38.9%，平均生存8.8个月；姑息性手术率30.9%，平均生存3.9个月，其他治疗方式占30.2%，平均生存3.3个月。

There is no significant gender difference of moral judgment among the sum simples except among primary school children.

青少年品德形成和发展的机制与其家庭结构变数--凝聚力、适应性、沟通模式有极密切的关系。

The above-ground biomass of grasses, sedges and communities among primary plot, moderate-degraded plot and heavy- plot showed significant difference.

中度和重度退化样地与原生植被样地的禾草类、莎草类以及群落总生物量差异极显著(P.01)。

The difference between a hard switching and quasi resonant flyback converter is the turn on time point of the primary switch.

硬开关和准谐振反激变换器之间的差异在于一次侧开关的开启时间点。

Predation is a primary cause of nest mortality in many nests of small passerines. And the difference of fauna causes different patterns of nest predation in temperate, tropical and subtropical region.

天敌掠食是造成小型燕雀目鸟类繁殖失败的主因，而在不同的气候区，由於动物群聚组成的差异，也会导致天敌组成有所不同。

The main contents of the present paper include: 1、The mechanism of fouling accumulation and the effects of fouling and slagging on boiler performance are analyzed. The model of fouling increasing is developed on the basis of sediment rate and denudation rate. The fouling monitoring models for boiler furnace and convective sections based on heat balance, the ones for air heater based on converted pressure difference are given. The implement results show that these models can reveal the cleanliness of boiler heat transfer surface. 2、The disadvantages of the model for boiler furnace fouling and slagging monitoring based on heat balance are discussed, and the calculation of radiant heat flux is considered as the primary difficulty.

主要包括以下内容： 1、分析了锅炉受热面污染形成的机理，从灰污的沉积率和剥蚀率角度出发，推导了受热面灰污增长的基本模型，分析了灰污热阻随积灰时间和烟气流速变化的规律，并通过大量现场试验，得到了沉积常数与时间常数的取值范围； 2、针对炉膛、对流受热面和空气预热器等不同受热面的传热特性，分别建立了基于热平衡和折算压差的污染在线监测模型，经实践验证，其监测结果能够满足现场工程应用的精度要求； 3、分析了基于热平衡原理的辐射、半辐射污染监测模型的不足之处，指出了机理模型因对炉内辐射换热量计算不准确，导致对以辐射换热为主的炉膛和以半辐射半对流的屏式过热器监测效果不够理想。

Furthermore, the other focal point of train operation adjustment, to adjust train unit routing, is studied comprehensively. First the difference between the primary plan and the adjustment plan of train unit is discussed, and then the working process of making optimal adjustment plan is studied based on some adjustment principles which are set based on the adjustment goal.

动车组折返交路的调整是高速铁路列车运行调整的两个重点之一，本文对该问题进行了较为全面的研究，首先分析了动车组运用计划与调整计划的区别，然后根据调整目标制定了调整原则，在此基础上研究了动车组调整计划优化编制的工作流程。

This text aims at the difference of several representative geology conditions in Yang Shui mining area, carried on the primary election to the mining method of Yang Shui mining area, introduced the new theories of numerical optimization choice of mining method that are fuzzy mathematics and artificial neural network etc, based on the existing mining methods that are feasible, adopt the fuzzy optimization choice principle of flexible neural networks, and synthesize several experts and fieldworkers' opinion, built up the related mathematical model and revised model, carried on processing of programming through computer, thus established each optimization mining project under several representative geology conditions in Yang Shui mining area, and carried on optimizing to the existent unreasonable parameter in mining project;have the great significance to aim at each kind of geology condition for each mining area to adjust the mining method in time in the course of mining, abandon chronically unreasonable mining method, full reclaim the mine's resource, lower the dilution rate、 loss rate of mineral mining, raise the production capacity of stope and economic benefit of mine.

本文针对洋水矿区几种典型地质条件差异，对洋水矿区采矿方法进行了初选，介绍了模糊数学和人工神经网络等采矿方法数值优选新理论，在现有可行性采矿方法的基础上，采用弹性神经网络模糊优选原理，并综合多位专家及现场工作者的意见，建立了相关的数学模型及修正模型，通过计算机进行编程处理，从而确立了洋水矿区几种典型地质条件下各自的最优采矿方案，并针对采矿方案中存在的不合理参数进行了优化，为各矿区针对各类地质条件在采矿过程中及时调整采矿方法，摈弃习惯性的不合理采矿方法，充分回收矿山资源、降低矿石开采的贫化率、损失率，提高采场生产能力以及矿山经济效益具有重大意义。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。