临界温度

The evolution of orogenic zone,gold ore-formation and its dynamic mechanism are studied and the new viewpoint is put forward that thermal stress is a main controlling factor in metamorphism,formation ,evolution of structure and ore-forming geodynamic environment. The critical condition of fluid convection in porous equal medium and the new conclusion is reached first that the thickness of structural layer and temperature gradient are main factors influencing fluid convection andtransport of ore-forming matters in additional to physical properties of rocks. According to the conclusion some mechanisms such as the transform from compressive type to tensile one of erogenic zone,transport and accumulation of ore-forming matters such as gold and so on and many ore-forming temperature values are interpreted qualitatively.

探讨了区内造山带演化、金成矿及其动力学机理，提出了热应力是影响变质作用、构造形成演化及成矿地球动力学环境的主控因素的新认识；对多孔均匀介质中流体对流的临界条件进行探讨，首次提出了除岩石物理性质外，构造层厚度和温度梯度是影响流体对流乃至矿质输运的主要因素。

Firstly, pressure, enthalpy, temperature and velocity of pure water at different location of hydrothermal circulation system are described. Density and viscosity of fluid are calculated from temperature and pressure using properties of pure water. Secondly, influences of formational anisotropy and crack zone on hydrothermal circulation are analyzed.

首先讨论了热液循环系统不同部位的压力、焓、温度、水流的密度、粘度及流动速度等参数的特征，其次分析了地层非均质性、裂缝带的存在对热液循环流场的影响，最后分别模拟了近临界状态及侵入体存在情况下的热液循环。

Hygrothermal performance of building components and building elements - Internal surface temperature to avoid critical surface humidity and interstitial condensation - Calculation methods.

NF P50-766-2001 建筑元部件的湿热性能。防止临界表面潮湿和填隙式冷凝的内表面温度。

The stability of levulinic acid in near critical water was studied in the temperature range from 220 to 280 ℃and under pressure of 10 MPa.

实验测定了压力10MPa、温度220-280℃内乙酰丙酸在近临界水中的稳定性。

The effects of main test parameters on the process of pitting potential of carbon steels have been studied by quasi-steady-state polarization technique and metallographical analysis technique.

采用准稳态的极化试验研究了各主要试验参数对碳钢在3%NaCl溶液中点蚀电位的影响，结果表明：3种碳钢钝化的临界pH值约为8 0 ；当T =2 0℃～35℃时，点蚀电位值Eb10 0 随温度的降低而变正；当电位变化速度慢于30mV/ 30s时，Eb10 0 随电位变化速度的减小而变负；试验面的粗糙度越大，点蚀电位越

Existence of critical convective heat transfer coefficient h c shows that for naturally cooled monobloc barrel, large h and small δ is selected when strength and manufacturing processes are considered simultaneously.

临界对流传热系数hc的存在表明，对自然散热条件下单筒身管来说，在重量、刚度允许条件下，增加壁厚可以达到降低内膛温度的目的；就主动冷却身管而言，选择大h、小δ时需兼顾强度和制造工艺性。

LBO crystal was used as the frequency doubling device which has the advantages of noncritical phase matching, temperature tunability, and higher conversion efficiency. The comparison between our experiment data and theoretical predictions is reported.

依据LBO晶体的温度调谐特性，采用Ⅰ类非临界相位匹配方式，探讨了LBO的倍频工作情况，文中分别给出了Nd：YAG的两种激光波长（1064nm和1319nm）的倍频实验与理论的对比结果，实验结果与理论能较好的符合。

There is slightly variation in Pn among the Pistacia vear varieties, but the curve of diurnal variation of Pistachio leaf photosynthesis all showed two peaks.

阿月浑子光合作用最适温度为30℃，光饱和点为1600μmol.m〓。s〓，光合作用最适土壤相对含水量为70％，灌溉的临界土壤相对含水量为30％～35％。

The ductile-brittle transitions due to both temperature and torsional prestrain were discussed by means of the micoscopic parameter ln.

利用扫描电镜测量了BHW60钢、20钢和45钢拉伸试样断口心部的临界空穴扩张比Rc／Ro，并据此分析了由于环境温度和扭转预应变等因素引起的韧脆转变过程及其细观形态。

The transition thickness is significantly dependent on the growth temperature and germanium content, and is always smaller than the critical thickness of pseudomorphic growth.

但是，当降低生长温度时，Ge〓Si〓在Si衬底上作二维生长的临界厚度可明显增加。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。