孔洞

It was also found that the protecting effect of erodents on the coating surface does exist. The protecting effect will be more evident if using erosion efficiency of unit mass erodent of sand in the slurry to describe the erosivity of erodent. Besides a model is proposed to explain the protection process. The wear mechanism of the coating is the co-operation of ploughing, cracking and ablation.

对涂层的SEM分析可知，除冲蚀粒子在涂层表面的犁沟作用，冲蚀磨损的结果造成涂层的表面生成了系列针孔，其中的一部分为溶剂挥发所至，另外还存在由增强颗粒的剥落和裂纹的扩展造成的涂层剥落产生的孔洞，这将可能为水的吸收和扩散造成有利条件，使复合涂层亚表层产生内应力。

Especially,the problems in pivotal step,such as oxidation,exposal,ionetching process and etc.are emphasized.

通过高分辨TEM图的分析，选择了合适的氧化工艺，制备的氧化层平整、没有孔洞，达到了隧道结的基本要求。

In addition, the abundant microcracks developed around the cavities provided the passages or vents not only for gases escaping like CO2, but for Ca(superscript 2+), Al3(superscript 3+), released out of the feldspathic minerals from the intrusion, migrating into the cavities as well.

Ca(上标 2+)、Al(上标 3+)离子在孔洞、孔隙溶液中发生化学反应，逐渐生成浊沸石、方解石，并逐渐沉积生长成集合体，生成浊沸石后的岩体可成为油气储层。

The jet samples are more compact than the coal samples because the honeycomb-like apertures of coal are filled with a large number of resinite arid gelatin for gelatination resulting in the changes of loose structure.

煤精与煤的产出环境相似，但宝石学特征差异较大，推断前者的成玉机制主要是由于含有大量且具有胶结作用的树脂体和凝胶体充填了煤的蜂巢状孔洞中，使煤较疏松的结构发生了改变而形成。

The rocks consist predominantly of mudstone, evaporite, gypseous mudstone and glauberite dolostone. The reservoir spaces mainly include pores, cavities and fractures, with fractures predominating.

摘 要：江汉盆地潜江凹陷盐韵律发育，部分韵律层段存在有工业价值的油藏，岩性主要为泥岩、泥膏岩、含膏泥岩、钙芒硝质白云岩等，储集空间有孔隙、孔洞和裂缝，以裂缝为主。

Two different approaches are adopted to prepare electrocatalyst supports, which are anodic aluminum oxide templated nanostructured materials and nanoporous graphitic carbon.

制备触媒载体采用两个不同的方法，分别为奈米结构材料阳极氧化铝模板以及奈米孔洞的石墨化碳。

The microstructure of MDF and MDF tested were studied. The results showed that the fibers in MDF are arranged randomly. Some of them arranged separately, most of them arranged in bundles. There are many blind holes between the fiber cells in MDF. The damage of MDF's compressive creep is the result of new cranny occuring, spreading and the combination of old cranny. In the repressing process, besides the pressure, heat is also the main factor on the damage of MDF, which can accelerate the adhension layer to deteriorate and lead to the gule strength decreasing.

结果表明：MDF的纤维排列无规则，纤维排列形态除少量纤维呈单根状外，大量的纤维以纤维束的形态排列；纤维之间存在许多大小不等的孔洞，呈不贯通状；MDF蠕变损伤是不断萌生新的裂隙并扩展和合并原有裂隙的结果；MDF二次加工过程中，除了压力是破坏MDF结构的主要因素外，加热温度使MDF胶层老化，胶合强度下降，也是破坏MDF结构的主要因素；MDF的破坏形态除了有纤维拉断外，还有纤维拔出和胶粘剂脱落。

The square-built dolomite flat containing karstenite and karstenite-dolomite flat in the Ordovician of middle-eastern Ordos Basin provide the favorable condition for the stratify development of pores and holes and the large acreage distributing.

鄂尔多斯盆地中东部奥陶系呈现出宽缓的盆缘含硬石膏白云岩坪与盆缘硬石膏白云岩坪相带，为孔洞型储层的成层发育、大面积展布创造了良好的条件。

Artefacts found in the 600 x 600 meter (1,800 x 1,800 ft) include metal coins, metallic chisels, terracotta missiles, rouletted and knobbed pottery, stone hammers and bangles.

这次被挖掘的土地的大小为600米×600米（1800英尺×1800英尺），考古学家在其中找到的物品包括金属硬币、金属凿子、赤陶土制成的投掷物、带有孔洞和圆形把手的陶器、石头锤子及手镯等。

This NS-MCM-41-Pd proves to be an efficient heterogeneous catalyst to catalyze aryl bromides with organozinc reagents for Negishi reaction. In the third suject, fluorescent surfactants with different conjugated aromatic moieties and changeable and gradually extended hydrophobic lengths were successfully synthesized by multiple synthesized manipulations.

首先利用颗粒大小为奈米尺度(约100 nm)、表面积约 660 m2/g 与孔径大小约 2.6 nm 且孔道分布为虫洞结构之孔洞材料，NS-MCM-41，作为异相触媒担体，稼接上钯错合物形成异相催化剂 NS-MCM-41-Pd，催化 aryl bromides 与 organozinc reagents 进行 Negishi reaction，并探讨触媒反应后再回收活性测试。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。