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Porosity evolution influenced by those diageneses is also analyzed. The dissolution and alteration of feldspars and unstable rock fragments are the main constructive diageneses, but the compaction, pressure solution and cementation are the main destructive diageneses which are unavoidable.

溶蚀作用与蚀变作用是形成砂岩储层的两大建设性成岩作用，云母类矿物的水解作用对孔隙的形成也起到一定的积极作用；但机械压实、压溶作用和胶结作用则是储层形成过程中不可避免的破坏性成岩作用。

This article introduces the scheme reasoning、equipment selecting and project implementing of the Timing System Alteration for The fertilizer plant Urea device Ammonia Pump.

本文介绍了化肥厂尿素装置氨泵调速系统改造的方案论证、设备选型和工程实施。

Meanwhile, the transcript regulation of Tw or Td by c-myc or mad1 was no obvious alteration in hTERT negative expression normal fibrocytes.

同时，在hTERT表达阴性的正常成纤维细胞中，c-myc和mad1对Tw或Td的转录调节作用并不明显。

One of the objectives of this study is to investigate the drainage property of plasma thin film coating on the evaporator surface, the other objective is to measure the alteration of optic characteristics of PTFE after plasma coating treatment.

另一目的是量测PTFE镀膜后光学特性的改变。

The change of plant functional types'importance value reflects the community members'alteration and orientation of community succession, that is: perennial grasses gradually take the place of annual or biennial forbs and perennial forbs, finally occupy dominant position in climax community.

植物功能群重要值的变化反映了群落成员型的更迭、群落演替方向，即：多年生禾草类不断取代1、2年生杂草和多年生杂草的地位，在演替顶极中最终占主导地位。

The key points lie in the alteration of the system, forcing a balance between the local economy department and environmental protection department,and promoting participation of locals.

改变制度，让地方上的经济与环保部门形成制衡，促进地方的公众参与才是关键，只是搞一些培训无异于舍本逐末。

Rep4/rep4 strains showed no significant alteration on drug susceptibility and germ tube formation when compared to the wild type.

和野生菌株相比，rep4/rep4 对於药物感受性与芽管形成皆无明显影响。

These observations demonstrate that the alteration of the glycosidic group as well as its configuration does not,at least in the case of the above compound studied,interfer with the course of formatio...

以上的转化证明了配醣基的不同和构型的改变，至少在所研究的一个配醣物的结果来看，对于内醚环形成的构型是没有影响的。

This paper presents the results of leachability test of 6 types of oxidized gold ores of 22 mines, and the industry test of agglomerate heap leaching of oxidized ore of kaolin alteration fractured zone in China.

本文介绍了我国六种金矿类型的二十二个矿区氧化矿石的实验室住式堆浸试验结果，和高岭土化蚀变破碎带金矿氧化矿石的制粒堆浸工业试验；对影响堆浸的诸因素进行了系统的研究；探讨了全浸出过程的动力学特性。

Studies on many aspects show that there are four main reasons which cause the epigenetic effects;the methylation of DNA,the acetylation of histones,the change of chromatin structure and the alteration of protein configuration.

多方面的研究表明，导致后生效应的可能原因主要有四个方面：DNA的甲基化、组蛋白的乙酰化、染色质结构背景的改变和蛋白质构型的变化。

I can still vividly recall the impressive scenes you gave. You were among my friends and relatives who accompanied me from my house to the seaport and when the porters were slow to show up, you obligingly carried my suitcase for me.

你对我的种种感人情意，使我记忆犹新，那天你随着我的亲友从家里送我上轮船，搬运工迟迟不来，你毅然替我提着皮箱上船。

St. Nicholas became the patron saint of Russia, where he was famous for his red cape, flowing white beard, and bishop's mitre.

圣尼古拉成了俄罗斯人的守护神，在那里，他以身披红斗篷，留着飘逸的白胡须，戴着主教法冠而闻名。