材料

By Vis-UV detector, column efficiencies of conically shaped preparative chromatographic columns with porous polytetrafluor oethylene frit and porous stainless steel frit were compared.

利用柱后可见-紫外检测，比较了采用多孔聚四氟乙烯材料和多孔烧结不锈钢材料作为台锥形制备液相色谱柱柱头筛板材料时的柱效；用柱上可视化方法研究了柱头筛板的直径对流型的影响。

By applying Frenchet derivative analysis, the iteration formula is derived to solve the constrained functional minimization problem, essentially the formula is a level set equation, in which the motion velocity of the level set is the shape sensitivity of material interfaces.

这样就把材料界面表示为一组高维函数的水平集，使拓扑优化问题转化为材料界面追踪问题，这时材料界面的形状敏度就(来源：9aABb5C论文网www.abclunwen.com)是水平集的运动速度。

Combine the cooling characteristic curve of quench media and the dynamics curve of continuum cooling phase change to select the quench media of materials is very useful, and it can obtain best microstructures and controlled crack polarity or distortion.

文章摘要：提出将淬火介质冷却特性曲线与材料的奥氏体连续冷却转变动力学曲线相结合，来选择材料的淬火介质，获得合适的显微组织并控制材料淬火过程中的变形、开裂倾向。

The research showes a good correlation exists among curve of load-deflection,changes in electrical resistance and AE hits.

材料内部的损伤引起相互搭接的渗流网络破坏，而致使材料电阻增大。因此，在整个加载过程中，体系的电阻反映了材料内部的损伤。

The properties of the material and the operation method are also described in this paper, The advantages of the new matiral become more obvious, in comparison with other methods which are usually used in cranioplasty.

对该材料的性能及手术方法作了介绍，对几种不同的颅骨修补材料作了比较，认为该材料的突出优点是力学性能好，化学性质稳定，组织相容性好。

Jinan classifies mother the net customer service personnel after receiving your this question, you proposed after the question has consulted the Jinan know-it-alls, specially gives the reply: industry the peak company's special-purpose material has 16 items of revolutionary material: The German fragrant river character wall paint, the German fragrant river character wood lacquer, original installation import the European yellow deals, original installation to import the Australian yellow deals, industry the peak special-purpose ecology crepe rubber, industry the peak special-purpose electric wire, the WAGO coupling, industry the peak special-purpose pot galvanize threading tube, industry the peak special-purpose valuable, industry the peak special-purpose wall valuable, industry the peak special-purpose wall valuable, industry the peak special-purpose hard and soft underwater paint, industry the peak special-purpose allocated proportion mortar, industry the peak special-purpose light steel keel, the water resistant plaster tablet, the oak to model the board.

济南分类妈妈网消息今天一网民来电咨询关于济南业之峰装饰公司的相关问题：我知道装饰公司是集室内设计、预算、施工、材料于一体的专业化设计公司。装饰公司是为相关业主提供装修装饰方面的技术支持，我家装修找的是济南的业之峰装饰公司，我想问下业之峰装饰公司的产品可靠吗济南分类妈妈网客户服务人员在接到你这个问题后，就你提出的问题特意咨询了济南万事通后给予回复：业之峰公司的专用材料有16项革命性材料：德国都芳水性墙漆、德国都芳水性木器漆、原装进口欧松板、原装进口澳松板、业之峰专用生态白胶、业之峰专用电线、WAGO连接器、业之峰专用热镀锌穿线管、业之峰专用地宝、业之峰专用墙宝、业之峰专用壁宝、业之峰专用刚柔防水涂料、业之峰专用配比砂浆、业之峰专用轻钢龙骨、耐水石膏板、橡塑板。

As stated above, to increase honing stone pressures can remarkably decrease ceramic critical grinding stresses, increase ceramic removal at the crosshatch intersection points, and promote the propagation of grinding cracks. The feasibility of efficient honing for ceramics is proved theoretically.

在上述研究结果基础上，分析了陶瓷材料塑性加工机理，磨削应力低于临界磨削应力是实现陶瓷材料塑性加工的理论依据，并提出陶瓷材料塑性珩磨加工中的两个主要因素：磨削深度和磨粒粒径的精确控制。

A metal material which has a thermal expansion coefficient lower than that of the cupper and causes solid-phase reaction with the cupper at a temperature of 400 DEG C or higher is used for the first electrode material.

下述金属材料被用于第一电极材料，该金属材料具有比铜的热膨胀系数低的热膨胀系数，并且在400℃或更高的温度下与铜发生固相反应。

In this research, the ~ and F2 of the crosses between a natural mutant 慪34?with super-minute grain and 慪38?with super-large grain,慡huhui 881擲huhui 527?with middle grain size were carried out to study the inheritance of the grain shape (grain length, grain width, grain thickness and grain length/width ratio) and 1000-grain weight. The main results are summarized as below:? The F1 grain length, grain width, grain thickness and 1000-grain weight of three crosses were lay between the two parents and tended to Y34, which indicated that those grain traits were all governed by the dominant effect of Y34 and influenced by both female and male parents. The differences of F1 grain length, grain width, grain thickness and 1000-grain weight of positive and negative crosses between Y38 and Y34 indicated the existence of cytogene effects.? The broad heritabilities of major grain traits were calculated.

本研究利用一份水稻极小粒自然突变材料Y34与一份水稻极大粒材料Y38、两份常规籽粒大小材料蜀恢881、蜀恢527的杂交F_1及F_2，对主要粒形性状（粒长、粒宽、粒厚、长宽比）及千粒重进行了遗传研究，根据遗传研究的结果利用微卫星标记结合F_2群分法对控制Y34短粒性状基因进行了分子标记定位，主要结果如下：●各组合F_1粒长、粒宽、粒厚和千粒重介于双亲之间且明显偏向于小值亲本 Y34，这表明粒长、粒宽、粒厚和千粒重均主要受小值亲本显性基因的控制并同时也受大值亲本核基因的影响。Y34与Y38正反交F_1在粒长、粒宽、粒厚、千粒重等性状上存在差异，表明存在细胞质效应。

When modeling any material, the spring can be used to represent an ideal elastic material and the dashpot an ideal viscoelastic material.

当模型的任何材料，弹簧可以用来代表一种理想的弹性材料和粘弹性阻尼器的理想材料。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！