Casting defects, especially porosity, will reduce fatigue strength of the crank-shaft.
铸造缺陷，尤其是铸造缩松，降低了曲轴的疲劳强度。
During the Carbonate gas reservoir's numerical simulation process, it is often short of exact and quantitative fracture model, especially porosity and permeability models.
碳酸盐岩油气藏在数值模拟的过程中往往缺少准确定量的裂缝模型，尤其是裂缝孔隙度和渗透率模型。
Porosity is closely related with the diagenesis, especially the development of secondary pores.
孔隙演化与该区的成岩作用关系密切，特别是次生孔隙的发育。
Many experiments show that: when a well produces oil from a reservoir, the porosity and permeability will decrease, as fluid pressure drops, especially for reservoirs with abnormal high pressure.
大量实验表明：当油藏生产原油时，随着地层中流体压力的降低，油层的孔隙度和渗透率下降，特别是在异常高压油藏中尤为显著。
But it will fail to recognize the gas bearing bed buried deeper by the two methods as its porosity log feature is not obvious, especially when density porosity is lower than neutron porosity.
但是，对埋藏较深的气层而言，由于其孔隙度曲线特征并不明显，故用常规方法识别十分困难，特别是当密度孔隙低于中子孔隙度时，上述两方法识别气层均失败。
Porosity determined from shear moveout had the advantage of less influence on computation result by pore fluid, especially the advantage was obvious when gas was saturated in formation.
利用横波计算地层孔隙度具有计算结果受孔隙流体影响小的优点，特别是在地层含气的情况下，优势更加明显。
The porosity is mainly the kind of intergranular pore, especially the kind with small-middle or middle pore and big pore.
孔隙主要类型主要为粒间孔隙，且以中孔中细喉型和大孔细喉型为主。
It was generally considered that the irreducible water saturation of sandstone reservoirs was related to the sandstone type, porosity and pore structure, especially median size and porosity.
前人研究普遍认为，砂岩储层的束缚水饱和度与砂岩类型、孔隙度和孔隙结构有关，粒度中值和孔隙度的影响最大。
Dry flow agent can improve the porosity and the leveling of the powder, improve powder spraying, especially suitable for metallic and pearl powder system.
适量加入能提高粉末的疏松度及流平，改善喷粉时的吐粉、堵枪现象及提高死角上粉率；尤其适用于金属及珠光粉末体系。
The bulk density of PS was small and porosity was large, especially in winter wheat harvest time.
PS的容重较小，孔隙度较高，在冬小麦收获期表现尤为明显。
The bulk density of PS was small and porosity was large, especially in winter wheat harvest time.
PS的容重较小，孔隙度较高，在冬小麦收获期表现尤为明显。
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