查询词典 mass

To give the definition of the mass concrete and to concrete\'s cracks together with practical meanings of control ,and give a brief review on the research in the field at home and abroad, at last, methods to control temperature crack of the mass concrete from several aspects such as design measures,concrets material, construction schedules.etc are summed up; To explain the physical mechanics of the concrete and computing methods-Difference Method and Finite Element Method, and illustrate the application of their specific methods repectively;Several temperature factors that can influence the temperature stress of mass concrete baseplate are analyzed. The influence degree of temperature factor can be got through the ANSYS simulation computation the control of temperature can control the temperature stress, consequently control the temperature crack of mass concert baseplate; through the influence of the crack resistance ability of mass concrete baseplate which takes the reinforcement as a part is analyzed. By ANSYS simulation, the best suited volume ratio of reinforcement is found out, at same time the layout of reinforcement with the same volume ratio can also affect the resistance ability of mass concrete baseplate. Sum up of above analysis, anti-crack function of steel bar in early mass concrete baseplate is obvious, so it\'s necessary to consider beneficial effect of construction steel bar in research of temperature control on mass concrete baseplate.

本文先容了大体积混凝土及混凝土裂缝的基本概念，对国内外在这个领域里的研究现状作了扼要叙述，并从结构设计、混凝土材质、施工措施等方面总结了大体积混凝土温度裂缝控制的方法及防止措施；阐述了混凝土的基本物理力学性能，总结了大体积混凝土温度计算的方法——差分法和有限元法，并分别举例说明其具体应用的方法；分析了影响大体积混凝土底板温度应力的几种温度因素，利用ANSYS模拟计算，得出了每种因素的影响程度，通过分析提出了在这几种温度影响因素下如何通过控制温度以达到控制温度应力从而来控制裂缝的具体建议；针对大体积混凝土基础底板中配筋的不同对混凝土底板抗裂能力的影响不同，利用ANSYS进行模拟分析，得出底板中最合适的体积配筋率，同时分析了在相同体积配筋率下钢筋的具体布置对大体积混凝土基础底板抗裂能力的影响，分析表明，配置钢筋对混凝土结构的开裂阻止作用明显，在研究大体积混凝土温度裂缝题目时，要考虑钢筋在其中的有利作用。

So, the average density of spatial energy of spatial radius is the length of Planck of relative time-space cosmic energy follow the rise and fall of quantum spatial measurement, at original cosmic time-space set out, from the structure-energy of mass 16.38×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 8.19×10-71 N · m, come to do not exceed the structure-energy of mass 32.76×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 24.57×10-71 N · m, not smaller the structure-energy of mass 21.84×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 13.65×10-71 N · m, come to do not symmetrically gradually belong to stabilization thus at reductively fluctuate, not can reversely strides across reach the stable state of structure-energy mass 24.57×10-71 N · m to the space-energy of 8.19×10-71 N · m and the mass-energy of 16.38×10-71 N · m maintain unchanging.

所以，宇宙能量的相对时空空间的半径为普朗克长度的空间的能量平均密度随宇称量子的涨与落，在原初的宇宙时空启动，从16.38×10-71N · m 质量结构能对于8.19×10-71N · m 空间能与8.19×10-71N · m 质能，成不大于32.76×10-71N · m 质量结构能对于8.19×10-71N · m 空间能与24.57×10-71N · m 质能，不小于21.84×10-71N · m 质量结构能对于8.19×10-71N · m 空间能与13.65×10-71N · m 质能，成不对称地递归于稳定而在缩小地波动，不可逆地跨越到24.57×10-71N · m 质量结构能对于8.19×10-71N · m 空间能与16.38×10-71N · m 质能的稳定状态保持不变。

Age, body mass index and the main outcomes of PSG were compared between the two groups. ResultsAll 230 patients had an oropharynx obstruction, of them 120 had a retrolingual obstruction, 105 had a nasal obstruction and 53 had a nasal obstruction and retrolingual obstruction.

方法回顾分析230例OSAHS患者的上气道阻塞情况，并根据是否存在舌根平面阻塞将患者分为两组，比较年龄，体质指数（body mass index， BMI）及PSG主要监测指标。

This paper determined the olfactory respones of Tetranychus viennensis to different plants odors with "Y" olfactometer and petri-dish, volatiles from leaves of different plants were absorbed with SPME and analyzed with GC-MS (gas chromatograph-mass spectrometer). At the same time, the effects of different host plants on the development of Tetranychus viennensis were determined by means of the leaf-dish rearing method , in addition, the contents of some chemicals in the leaves of different plants were also determined.

本文用&Y&形嗅觉仪法和培养皿法测试了山楂叶螨Tetranychus viennenis Zacher对不同植物气味物质的嗅觉反应，并利用固相微萃取SPME吸附、用气相色谱—质谱联用仪GC-MS(gas chromatograph-mass spectrometer)分析了不同植物叶片的挥发性物质成分：同时采用海绵水盘法饲养山楂叶螨，研究了不同植物对山楂叶螨生长发育的影响，并测定了不同植物叶片中一些生化物质的相对含量。

The L2 glass with 30 mass% Al2O3 filler (L30A) can be fully densified at 800oC in 1 h and devitrified at 850oC for 10 min. The sintering scheme has been optimized to achieve limit dissolution of Al2O3 grain and crystallization of equi-axial LaBO3 and flaky LaAl2B3O9 crystals. The final matrix has limited glassy phase.

L2玻璃添加30 mass%的氧化铝（简称L30A）於800oC持温一小时并於850oC作十分钟的结晶处理可达完全致密，整体的烧结流程设计亦已最佳化，微结构观察中可发现等轴LaBO3及片状LaAl2B3O9之结晶体，其烧结后之基地仅残存有限的玻璃相。

Preferential dissolution of α phase for specimens processed less than 12 hrs were revealed by using ICP-MS (inductively coupled plasma-mass spectroscopy). Hydrides having precipitated in the α-phase at the near surface peeled off into the electrolyte, and thus resulted in reduced HUE for specimens having experienced longer charging periods. In order to increase HUE, the hydrogenation promoter, Na2S2O35H2O, was added into the electrolyte to see the effect on the hydrogen absorption.

感应耦合电浆质谱分析术(inductively coupled plasma-mass spectroscopy； ICP-MS)分析发现，渗氢前一阶段（12小时）铝元素有较明显之溶释现象，此一现象肇因於渗氢作用使近表面层α-相中析出之氢化物体积逐渐扩大膨胀，最后剥落而溶於硫酸水溶液，也因此造成长时间之渗氢效率未随渗氢时间增加而增加。

In this paper, an approach to handling this problem is proposed. Before adopting the Dempsters rule to combine belief functions, the assignments of mass functions are pretreated by the disturbance of ignorance.

提出一种新的冲突证据合成方法，即在Dempster合成之前，基于未知扰动对mass函数进行预处理，并通过预处理来解决标准化问题。

The term combines the old English words for "loaf" and the Christian"mass", and in early church Lammas was the festival of the wheat harvest .

它是由两个英语单词结合而成的：loaf和mass。在早期教会里，&收获节&是庆祝收割麦子的节日。

We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS、NMR、FT-IR etc.

中文摘要我们已合成出一系列在联吡啶的4，4′位置有两个氟化烷基侧链的联吡啶配位基[4，4′-bis(RfCH2OCH2)-2，2′-bipyridine ， Rf=HC4F8(1a)， HC8F16(1b)， C3F7(1c)及C10F21(1d)]，经由亲核取代反应，由4，4′-bis-2，2′-bipyridine反应而得，并具有不错的产率，其纯化也简易可行，所合成之产物并可用GC-MASS、NMR、FT-IR鉴定其化学结构。

A rapid and simple method was developed for determination of aroma c omponents of apple wine by head space solide-phase microextraction coupled to capillary gas chromatography-mass spectrometry. Four paramete rs, including fiber coatings,extraction time,concentration of salt, and extraction temperature,were optimized. 2-Octanol was used as an inter nal standard for accuracy improvement.

以顶空固相微萃取法（Head Space Solid-Phase Micro-Extractions，HS-SPME）和气相色谱质谱（Gas Chromatgraphy-Mass Spectrometry，GC-MS）联用，2-辛醇为内标，研究了萃取头、萃取时间、加盐质量浓度、萃取温度对苹果酒中香气物质萃取的影响，优化了分析条件，建立了快速测定苹果酒中香气物质的方法。

Graf, without question, is the greatest women's player in history.

格拉芙，现在，毫无疑问是女子网坛历史上最伟大的选手。

If not, you will have to look around at all your important data.

如果没有，您将需要检查所有的重要数据。