区时

The results show that, the Fick's second law based on corrosion environment should be presented; the linear isotherm of chloride binding is appropriate in concrete structures; the amounts of bound chloride in tide range area and air environment is 0.11~0.37 times of free chloride; the diffusion coefficient is 1/3 to the concrete without RAM and the effect is the best when the RAM ratio is about 15%.

研究表明：Fick第二定律仍需进一步改善，有必要根据不同侵蚀环境建立不同的侵蚀模型；用线性结合理论描述实际混凝土结构中的氯离子结合基本适用；潮差区及以空气中氯离子侵蚀为主的混凝土结构，结合氯离子占自由氯离子的相对值大致在0.11～0.37之间；掺加海水耐蚀剂混凝土的氯离子扩散系数大致可降为原来的1/3；海水耐蚀剂含量在15%左右时其提高混凝土抗氯离子渗透性能的效果最明显。

The results show that, the Ficks second law based on corrosion environment should be presented; the linear isotherm of chloride binding is appropriate in concrete structures; the amounts of bound chloride in tide range area and air environment is 0.11~0.37 times of free chloride; the diffusion coefficient is 1/3 to the concrete without RAM and the effect is the best when the RAM ratio is about 15%.

研究表明：Fick第二定律仍需进一步改善，有必要根据不同侵蚀环境建立不同的侵蚀模型；用线性结合理论描述实际混凝土结构中的氯离子结合基本适用；潮差区及以空气中氯离子侵蚀为主的混凝土结构，结合氯离子占自由氯离子的相对值大致在0.11～0.37之间；掺加海水耐蚀剂混凝土的氯离子扩散系数大致可降为原来的1/3；海水耐蚀剂含量在15%左右时其提高混凝土抗氯离子渗透性能的效果最明显。

Identifying basic farmland protection areas must be resolutely rectified prior basic farmland "is being drawn closer together, and is bad is not superior" approach, focusing on solving basic farmland protection areas and building use areas, land reclamation areas, such as the prohibition of other types of reclamation district land use zones "Next margin." Where the railway.

确定基本农田保护区时，要坚决纠正前一时期基本农田&划远不划近，划劣不划优&的做法，着重解决基本农田保护区与建设用地区、土地开垦区、禁止开垦区等其他类型土地利用区&接边&的问题。

Chen Fu, one of the tunnel workers and now the vice-director in the National Expressway Engineering Bureau, said that in one winter morning of 1989, when he was excavating a large hole in the tunnel, his phone rang all of a sudden.

陈福是现任国工局三区处副处长也是当时开拓隧道的成员之一。他说：「在1989年冬天的一个清晨，当他在隧道中凿洞时，手机突然想起。

The influence rule to powder quality and quantity from some technical parameters such as materials vapor tension, gas pressure, the ratio between hydrogen and argon, current intensity and gas circulate intensity were discussed by single-factor experiment, on the base of which the perpendicularity experiment scheme was arranged.

本文采用压力模型计算出稳定弧光制粉时的气相空间温度在373K以下；从电流密度和电导率角度计算出等离子体电弧场中心温度高达5000-6500K；由此得出弱电离等离子体自由弧的自身温度场即使没有外界强制冷却，在等离子体焰区特征半径(约1.26cm)范围内的温度梯度就可达4787℃/cm，这是电弧等离子体温度场分布高度集中的具体表现，也是纳米金属粉末无须液氮冷却就能生成的本质原因，阐释了等离子体温度场自身的极大温度梯度是金属粉体纳米化的控制机制。

Thus APRI at the root extending stage was an efficient irrigation method for tobacco production with water saving and quality regulating under lower fertilization in this study.

本研究结果表明，低肥时在烤烟伸根期进行分根区交替灌溉是烟叶生产中一种较好的节水调质的烟田灌溉方式。

The results showed that partial root-zone drying and alternate partial root-zone irrigation treatments reduced tobacco water consumption and tobacco yield, but tobacco water use efficiency increased with 7.5% and 11.2%, N and K contents of middle leaves treated with N 0.20 g/kg soil enhanced 23.1% and 25.2%, 33.6% and 59.8%, respectively when compared to the conventional irrigation treatment.

结果表明，在不同施N水平下，与常规灌溉相比，部分根干燥灌溉和分根区交替灌溉的烤烟耗水量下降，产量有所减少，而水分利用效率提高7.5%和11.2%；施用N 0.20 g/kg土时，PRD和APRI中部叶N含量分别提高23.1%和25.2%，K含量分别提高33.6%和59.8%。

In order to resolve the curing technology of loose tobacco curing barn, and spreading it in most tobacco planting area, the series of research of curing capability, technology of loading and curing technology on loose tobacco curing barn were studied. We found out the curing technology of loose tobacco curing barn when adopting nature loading method, the loading density were 75-85kg/m3, and the thermometer were hanged at the bottom layer. This technology was on the base of its own characteristic, it also integrated the technology of the three stage curing technique, and it had the virtue of simplicity of operation, earthliness and understandability, better curing effects, and preferably spreading foreground.

为解决散叶烤房烘烤工艺难题，使其能在广大烟区快速推广，通过对该烤房烘烤性能、装炕技术和烘烤工艺的系列研究，提出了采用自然堆积法装烟，装烟密度75~85kg/m3，温度计挂在一层时的散叶烤房烘烤技术，该技术根据散叶烤房自身的特点并结合&三段式烘烤工艺&，操作简单，通俗易懂，易于被烟农掌握，烘烤效果较好，有较好的推广应用前景。

It is considered that pre-tension stress counteract the compression stress in welding zone generated by thermal expansion, consequently reduce the compression plastic deformation, and depress the tension stress in welding zone when cooling down, and accordingly minish the compression stresses far from the welding zone.

分析认为，预拉伸应力部分抵消了焊接区热膨胀产生的压缩应力，从而减小了压缩塑性变形，进而减小了冷却时焊接区域的拉伸应力水平，相应地远离焊缝区域的压缩应力也随之减小。

The main research tasks and results are as follows:(1) Through comparing the stress intensity factor of compact tension specimen calculated by finite element software with the theoretical value, the feasibility of calculating fracture parameters of crack tip in ABAQUS software was verified.(2) The relationship between the elastic modulus of the material and research scale was studied based on deriving the cohesive stress theory and other relevant theories. And the elastic modulus of the material on meso-scale was determined.(3) Global model and sub-model of the finite element were built in th...e macro-scale, and stress-strain field nearby the crack tip was analyzed, and the results show that the detailed stress-strain in the crack tip could be obtained by using the sub-model technique.(4) In meso-scale, the crack growth model was also established by assuming the crack propagating along the grain boundary, and the detailed stress-strain field in the crack tip was obtained.(5) The effect of crack length on Von Mises stress, and maximum principal stress and strain was analyzed in meso-scale when equivalent KI equals 30MPa.m1/2. And the results show that except for crack tip area, the stress-strain distribution in whole specimen is not affected.

主要完成研究内容和取得成果如下：(1)利用有限元软件计算出紧凑拉伸试样的裂纹尖端应力强度因子KI值，其结果与理论值一致，从而验证了利用ABAQUS计算裂纹尖端相关断裂参量的可行性；(2)在研究内聚应力等相关理论的基础上，推导出了研究尺度与材料弹性模量的近似关系，并确定了介观尺度上的弹性模量；(3)在宏观尺度上建立了全局有限元计算模型和子模型，得到了裂纹尖端应力应变场分布，结果表明利用子模型技术获得比较准确的裂纹尖端应力应变场分布是可行的；(4)在介观尺度上利用平均晶粒尺度的方式建立了裂纹沿晶扩展模型，得到了裂纹尖端断裂过程区的微观应力应变场；(5)当应力强度因子为30MPa.m1/2时，分析了介观尺度上在裂纹沿晶扩展过程中裂纹长度对Mises应力、最大主应力和应变的影响，结果表明，裂纹扩展长度对试样整体应力应变分布影响不大，而对裂纹尖端区域有较大影响；(6)介。。。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷