强度

To the later, this dissertation has been done transient dynamic analysis, calculated the stress intensity factors changing with the damp of asphalt pavement, the cycle of load action and the parameters of pavement structure.

应力强度因子最大值随荷载作用周期的变化呈倒"S"状变化，在高频和低频荷载作用时，逼近静载作用时的应力强度因子值，在一定的频率出现最大值和最小值，但应力强度因子的变化幅度不大。

This research shall be obtain that ocean-sand motor shall have more compressive strength early, but later strength shall descend, by means of non-standard sand mixing sample is quite obvious. By means of 50% ocean-sand substitutes for river-sand to mix fine aggregate compressive strength early shall be risen 20%~30%; Adds slag to ocean-sand or a half of river-sand and ocean-sand to make motor test sample, Compressive strength、bending strength and tensile strength shall be according to slag additament, by means of. slag add itament substitutes for cement 40%~60% is most. But slag be able to substitute for cement is too enough, 1ater strength shall be descent.

由本研究可得知海砂拌和的水泥砂浆，其早期抗压强度较高，而晚期强度则有下降的趋势，其中以非标准砂拌和效果最为明显；若以50%海砂替代河砂做为拌和细骨材，其早期抗压强度约上升20%~30%；添加炉石於海砂或河砂、海砂各半的水泥砂浆，其抗压、抗弯及抗拉强度，会随著炉石添加量增加而增加，其中以40%~60%炉石替代量为最佳，但是炉石替代量过高，晚期强度会下降；在相同水灰比状况下以海砂拌和水泥砂浆做比较，以非标准砂拌和有较高的抗压强度，其强度约比标准砂高10%左右。

The greater the ratio, the anisotropism of rock will be more obvious. Point load test...

用点荷载试验测定岩石强度的各向异性，比其它常规试验优越，只要分别测试垂直岩石层理、平行岩石层理或各软弱面的强度，可就得到岩石的最大和最小强度。

Abundant of VST, CPT, DMT tests data and the finite element analysis result are applied to get the distribution and increasing rule of strength of silt in consolidation process. The relation between the strength and depth is linear before and after consolidation. The strength-increasing rates are different in different horizontal places.

通过大量的十字板剪切试验、静力触探试验和扁铲侧胀试验，并结合有限元分析结果，研究了淤泥抗剪强度的分布规律和排水固结过程中抗剪强度的增长规律，发现排水固结前后淤泥路基强度基本随深度增加线性增长，排水固结过程中水平方向的抗剪强度增长速度不同。

The bending strength of concrete with micro slag enhanced much larger than tensile and compressive strength.

抗弯强度的增长率大于轴拉和轴压强度增长率。混凝土的拉压强度比和弯压强度比基本不变。

To counter the case which worm gear lost efficacy of rotating screen barrel rice mill ,reliability design theory was applied to analyze it.

针对旋筛式碾米机蜗杆传动时有失效的情况，运用模糊可靠性设计理论对蜗轮的强度进行分析研究，找出了蜗轮接触疲劳强度可靠度不足而失效的原因，将蜗轮材料由铸铁改为铝铁青铜，提高了蜗轮—蜗杆接触强度可靠度和弯曲强度可靠度。

ISO9001 quality system has been certified. The company has set up a complete quality inspection system with pop strength tester, pierce strength tester, edge pressing strength tester, adhesion strength tester of cardboard and box, cushioning material tester, and the transport package tester such as finished box compressive resistance tester and stacking tester etc.

公司已通过ISO9001质量体系认证，设有独立的品检部门，并拥有完整的检测设备，包括耐破强度、戳穿强度、边压强度、粘合强度测试仪、缓冲材料测试设备、及成箱抗压力测试机、堆码等运输包装件试验设备。

The analysis showed that the great value area of correlations is consistent between sea-level pressure field, 500hPa geopotential height field and intensity index of East Asian summer monsoon in Northeast China in pre-winter or summer, and the correlation is more better in summer than in pre-winter.

结果表明，前冬季和夏季海平面气压、500hPa位势高度与东北地区夏季风强度指数的正负相关大值区的分布基本一致，但夏季相关性更明显；海表温度与东北地区夏季风强度指数的相关不明显；北极海冰密集度与东北地区夏季风强度指数的相关性较好，前冬季以负相关为主，夏季以正相关为主；各振荡指数中只有NPO指数与东北地区夏季风强度指数有很好的相关性。

The results show that the plasticity zone and dynamically quiescent layer become fine equiaxed recrystallisation under the thermo-mechanical effect, the grains in the heat-affected zone grow up because of the effect of friction heat. When the rotation speed is 2 500 r/min and the welding time is 12 s, good joint is achieved, and the tensile shear strength of the joint reaches 9.24 kN. The tensile shear strength of spot increases with increasing tool rotation speed, with increasing welding time, the strength increases first, while then reduces. The microhardness of plasticity zone is high, but is slightly lower than that of the base metal, the minimum value of microhardness is in the heat affected zone. When the energy input of joint is high, the fracture type of spot is mode Ⅰ, and the tensile shear strength is high; on the contrary, when the energy input of joint is less the fracture type of spot is mode Ⅱ, and the strength is low.

结果表明：塑性区和动态静止层的晶粒在热和力作用下发生动态再结晶形成细小的等轴晶，热影响区的晶粒在摩擦热作用下长大变粗；搅拌头旋转速度为2 500 r/min，焊接时间为12 s时，可以获得力学性能较好的焊点，焊点的剪切强度达到9.24 kN；焊点的剪切强度随搅拌头旋转速度的增大而增大，随焊接时间的延长先增大后减小；塑性区的显微硬度较高，但略小于母材，接头显微硬度的最小值分布在热影响区；焊点热输入量较多时，接头为Ⅰ型断裂，焊点的剪切强度较高；焊点热输入量较少时，接头为Ⅱ型断裂，焊点的强度较低。

The different kinds of coal ash have obviously different influences on concrete slump and concrete slump losses because of the different fineness, water requirement ratio and ignition loss, and the fine coal ash with low ignition loss can more obviously restrain the concrete slump losses.

随着粉煤灰掺量增加，混凝土早期强度随着粉煤灰掺量而变化，当掺量在20％左右时，对7天强度影响不大，而当掺量＞30％时，早期强度明显降低；但掺粉煤灰混凝土后期强度增长较快，而且在掺量＜30％范围内随粉煤灰掺量增加而增大。 3。粉煤灰混凝土具有十分良好的工作性，流动性及填充性，易于泵送。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。