膨胀

When the termination pressure in the reversible adiabatic expansion process is equal to that in the irreversible adiabatic expansion process, the external work in the former is equal to the expansion work, however that in the latter is less than the expansion work.

指出了文献[1]中关于闭口系统不可逆绝热过程分析存在的问题，认为闭口系统绝热膨胀过程对外所作的功等于热力学能降，而非膨胀功等于热力学能降。

The homogeneous nucleation rate, saturation rate, and droplet growth equation at state 250K、100Kpa for pentone affected by single expansion wave has been obtained in the joined international cooperation research. Results exposed that temperature decrease in the homogenous nucleation and condensation is the preponderant factor in unsteady adiabatic expansion process.

参与同质核化率实验的国际合作研究，获得250K、100KPa状态附近戊醇在单脉冲膨胀波作用下的同质核化率、饱和度及同质核化微滴在低压状态中长大状态方程；研究表明非定常绝热膨胀过程中，降温因素在同质核化和凝结过程中占主导作用。

When filling the system with water, open valves to tank to ensure any water or air remaining in the bladder from factory testing is displaced prior to placing the tank in operation.

当水注入系统时，打开通向膨胀罐的阀门，确保膨胀罐在运行之前排放出工厂测试是残留的水或气体。

The research on the rising effect of the gas is popular in the dynamics of air bubble reactors.

通过对理论膨胀率和实验膨胀率对比图形的分析，发现颗粒污泥的平均直径和湿密度是影响图形拟合度的主要参数。

U-type expansive agent for concrete is an additive made by mixing and grinding sulfoaluminate clinker, alunite and anhydrite powder together.

我们吸收了中国明矾石膨服水泥'和美国K型膨胀水泥rZ'之特性，研制成功U刑膨胀剂(l民称UEA，uni七ed expansivo agen七)。

The mechanical property testing shows that the seamless PLLA tubes perform excellent radial strength,which indicates that the mechanical properties of biodegradable stents made of these tubes was supposed to be excellent.PLLA and its composites were first used in preparing seamless tubes as antecedency of laser-cut biodegradable coronary stents in china.Finite element analyses of the biodegradable coronary stent model indicate the explorative design basically meets the requirement of reasonable and applicable stents.There is not such kind of research yet in domestic.Optimum laser-cuttting parameters of CO2 laser was cauculated based on experiential formula,within it,biodegradable coronary stents,especially those with complex structure would be manufacutured from seamless tubes quickly by laser microprocessing with high consistency to the design model.The processing efficiency of the CO2 laser demonstrated in experiential formula by us will play an important guiding role in manufacturing biodegradable stents by laser-processing.Our stents that ascribed to laser-cutted,slotted tube stent are proved to be biodegradable, self-expandable and good biocompatible,basically reach the international level on the aspest of manufacturing procedures and design.

研究结果表明：壳聚糖改性材料综合性能优于纯PLLA，更适合于作为可降解冠脉支架的原材料；自主设计的探索性自膨胀管状闭环型可降解冠脉支架的性能符合冠脉设计要求，设计、验证生物可降解冠脉支架模型的研究在国内还未见报道；制备的改性PLLA无缝管的力学性能优越，可通过激光切割获得冠脉支架，这是国内首次采用聚乳酸材料来制备通过激光加工出可降解冠脉支架的无缝管；二氧化碳激光器加工精度能达到加工要求，加工出来的血管支架名义设计与实测值误差小，实现了冠脉支架、尤其是带有复杂外观设计冠脉支架的快速化、规范化加工，对二氧化碳激光器加工聚乳酸材料的效果研究在国内外属于首创，获得的经验公式对日后的深入研究有重要的指导意义；制备的支架为激光切割管状闭环型冠脉支架，支架外观设计、支架加工手段、支架的性能都基本接近国际水平，支架样品符合设计的理念，可以实现自膨胀功能。

It is the first laboratorial experiment results of self-volume deformation of MgO concrete applied to the arch dam foundation of Dongfeng hydropower station in Guizhou province, the laws of self-volume deformation of MgO concete is conducted, the long-term expansion deformation value is reckoned, the arc tangent curve model of the concrete is presented to describe the characteristics of expansion deformation of the MgO concrete.

本文以在国内外首次将MgO混凝土应用于主体工程的贵州东风水电站拱坝基础混凝土的室内自生体积变形成果为例，对MgO混凝土自生体积变形的规律进行了研究，提出了MgO混凝土自生体积变形的反正切曲线模型，用以表达MgO混凝土的膨胀变形特性和推算MgO混凝土的长期膨胀变形值。

Department of Scientific History and Archaeometry; Graduate University of Chinese Academy of Sciences; Beijing 100049;4.Institute of Archaeology; Chinese Academy of Social Sciences; Beijing 100710; China;The fabrication technologies in terms of phase composition,structure,firing temperature,porosity,density and water permeability of ceramic water pipes and contrastive ceramic tilesexcavated from Anyang Yin Ruins of Shang dynasty were studied by X-ray fluorescence,X-ray diffraction and dilatometer,respectively.It was found that the contents of CaO,K2O,MgO and P2O5 in CWP were relatively higher than those in contrastive CT.The difference was further confirmed by the mass ratio of flux...

采用X射线荧光、X射线衍射、热膨胀等分析手段对比研究了安阳商代陶水管的制作工艺，发现陶水管化学成分中各类熔剂的质量分数均略高于对比陶片中熔剂的质量分数，CaO、K2O、MgO等助熔剂与A l2O3的质量比进一步证实该现象，而这种差异性则外在地表现为陶水管的气孔度低于对比陶片以及陶水管热膨胀曲线中出现玻璃化现象，该结果表明陶水管原料应为一种易熔粘土，或者在沉淀粘土中人为地掺和了草木灰类掺和料，这有利于陶水管烧制与成型，有助于熔剂在熔融状态下，较好地进入陶水管中的空隙，使陶水管变得更加致密，一定程度上有利于防止陶水管的渗水，显示出陶水管制作工艺的特殊性。

In this paper, the autogenous volume deformation and prestress of the concrete pre-pared with this cement were tested.

对双膨胀中热水泥混凝土的自生体积变形以及在钢筋约束下的膨胀应力进行了试验。

Because in industry expandable graphite is mostly used as seal material and extensively applied in high-tech domains, such as nuclear power plant, avigation and petroleum industry, then often erodes the metal material which connected with it and loses seal , so the sulfur content of the expandable graphite is an important target to achieve , at the same time the industry manufacture need the greater volume .

因为可膨胀石墨在工业上主要被用作密封材料被广泛用在核电站、航空、石油工业等高科技领域，这样，其作为高级密封材料时，常腐蚀与其接触的金属材料，造成密封失效。所以含硫量是一项很重要的指标，同时较大的膨胀体积也是工业生产所需要的。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。