The strata dynamic cracking characteristics of E1142 haulageway in fractured roof were investigated by optical peephole device.
利用钻孔光学窥视装置及系统，探测了E1142轨道平巷顶板岩层动态破裂特征，统计分析了裂隙分布规律。
The larger pores in the interior of specimens may be saturated and lead to cracking, which result in the decrease of relative dynamic elasticity modulus.
内部大孔也可能饱和而引起内部开裂，导致相对动弹性模量下降。
The dynamic stress-strain and welding residual stress during welding are the significant factors which lead to welded cracking and debasement of the joint properties.
在焊接过程中产生的动态应力应变及随后形成的残余应力，是导致焊接裂纹和接头性能下降的重要因素。
Testing research on dynamic stress is the key to solve the cracking problem of large water turbine runners.
开展真机转轮叶片动应力试验研究是解决大型水轮机转轮开裂的关键。
It has a better flex cracking resistance than those of natural rubber but a lower tear strength and a higher dynamic modulus.
它比天然橡胶具有较好的抗挠曲开裂性能，但撕裂强度较低，动态模量较高。
Based on the material balance, energy balance and reaction kinetics, a dynamic model, having the form of a nonlinear distributed parameter has been presented for catalytic cracking process.
基于物料衡算、热量衡算和反应动力学建立的催化裂化过程动态模型是具有非线性、分布参数的模型形式。
A dynamic model of mechanism has been developed for the reactor and stripper of a fluid catalytic cracking unit (FCCU) with a high efficiency regenerator.
建立了前置烧焦罐式高效再生器催化裂化装置的提升管反应器和汽提段的动态数学模型。
The dynamic responses of the models with mass eccentricity and under the condition of bi-directional ground motion were studied at the elastic stage and stages of cracking, yielding and failure.
研究了在质量偏心和双向地面运动情况下结构从弹性、开裂、屈服直至破坏等各阶段的地震反应。
It has good physical properties, including high tensile strength, abrasion resistance, at high temperatures good dynamic behavior and flex cracking resistance at elevated temperatures.
HNBR具有非常优越的物理性能，包括高的抗拉伸强度，抗撕裂，高温动态使用和逐递上升温度中的抗屈挠防裂性能。
A model for a fluid catalytic cracking (FCC) unit which describes the dynamic behavior of the riser, particle separator vessel and the regenerator is developed.
提出了一个用于描述流化催化裂化单元提升管反应器、沉降器及再生器动态行为的计算机仿真模型。
A model for a fluid catalytic cracking (FCC) unit which describes the dynamic behavior of the riser, particle separator vessel and the regenerator is developed.
提出了一个用于描述流化催化裂化单元提升管反应器、沉降器及再生器动态行为的计算机仿真模型。
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