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On the basis of the summarization of MCM-Cs main features and its assembly and packaging technologies, the paper puts stress on relatively deepgoing studies in practically advanced MCM-C assembly process technologies as gold ball wire bonding, IC chip gold ball stud bump making, IC flip chip bonding and underfilling, in high reliability MCM-C packaging process technologies as integral LTCC substrate packaging, hermetically metal sealing, and also in the basic technological process of MCM-C assembly and packaging. Later on, it presents the effectively engineering development of two high level actual module products--a high-density monolithic processor system MCM-C , a high-speed data collecting and processing system MCM-C. Lastly, it briefly introduces various common methods of quality inspection and reliability test of MCM-C assembly and packaging in engineering practice.

论文在综述MCM-C的主要特点及其组装封装技术的基础上，重点对金丝球引线键合、IC芯片金球凸点制作、IC芯片倒装焊与下填充等实用先进MCM-C组装工艺技术和LTCC基板与外壳及PGA引线的一体化封装、气密性金属封装等高可靠MCM-C封装工艺技术以及MCM-C组装封装基本工艺流程展开了较深入的研究，有效完成了高密度单片机系统MCM-C和高速数据采集控制系统MCM-C等两种高水平实际产品的工程化研制工作，扼要介绍了工程实践中MCM-C组装封装工艺常用的质量检验方法和可靠性试验方法。

Due to the gradually in-depth study on gene, biological fermentation technology and strain, as well as the resistance to the chemical synthetic product, the bio-engineering fermentation technology achieves unparallel development and is widely applied in the fields of medicine, food and chemical engineering.

由于人类对基因、生物发酵技术、菌种研究的逐步深入，以及人们对化工合成产品的抵制，生物工程发酵技术得到了空前的发展，并在医药、食品、化工领域得到了广泛的应用。

At last,through engineering actual examples,elaborates priority election of unregular flowing water construction order,so as to give a reasonable arrangement for it,and furtherly enhances the production efficiency of labor and engineering quality.

对无节奏流水施工进行了介绍，探讨了组织无节奏流水施工的要点，分析了无节奏流水施工的主要参数，提出了确定工期的方法，通过工程实例，对无节奏流水施工顺序优选进行了说明，以合理安排无节奏流水施工顺序，从而提高劳动生产率和工程质量。

In terms of environmental construction, sticking to the road of sustainable development, we will prevent source of pollution by improving plants' sewage disposal capacity and promoting the project of supervising pollution enterprises; we will unshakenly shut down illegitimate petroleum refineries, East Wind Chemical Engineering Plant which has the longest history in the whole city and other main chemical engineering enterprises and install particles-treatment equipments to relevant enterprises, thus enhancing environmental construction.

环境建设方面，走可持续发展之路，通过扩大镇污水厂污水处理能力和推进污染企业污水接管工程，控制污染源；以铁腕手段取缔非法炼油厂，关闭吴江历史最悠久的东风化工厂和一部分主要化工企业，给烟尘企业安装处理装置，进一步加强环境建设。

Results After six passages in BHK-21 cells, cytopathic effect was observed by microscopy. The rescued virus was rejuvenated once in unweaned mice, and then came back to cell passage. We found that the poly tract of rescued virus was shortened when the virus was passaged twice in BHK-21 cells. Although the data of LD50 in mice and TCID50 in BHK-21 cells showed that the virulence and infectivity of genetic engineering viruses were lower than its parental virus, no significant difference was observed between the genetic engineering viruses with the different length poly tract.

我们发现，基因工程毒在BHK-21上连续传代至第6代时，可见明显的致细胞病变效应(cytopathic effect，CPE)；在经过一代乳鼠接种之后再重新适应到BHK-21细胞的过程中，poly区段出现了缩短现象；乳鼠致病性试验和BHK-21细胞TCID50测定结果表明，尽管基因工程毒与母本毒相比毒力偏低，但含有不同长度poly的基因工程毒之间并无显著差异。

He's also a member of the Wyss Institute for Biologically Inspired Engineering, dedicated to understanding nature's own engineering methods and using them in medical and non-medical applications.

他也是维斯生物工程研究院（Wyss Institute for Biologically Inspired Engineering）成员，致力于研究自然界自身的工程学方式方法并将它们应用到医学及非医学的领域中。

Google said Boon-Lock Yeo, director of its Shanghai engineering office, would take over Lee's engineering responsibilities.

谷歌说杨文活，他是上海工程公司的主管，将接替李开复的职务，刘允是中国销售团队的领导，担任业务和管理的职责。

Google said Boon-Lock Yeo, director of its Shanghai engineering office, would take over Lee's engineering responsibilities.

谷歌说上海工程办公室商贸和操作任务的负责人杨文洛将接手李开复的工程师的任务。

The notion of engineering geological zone was introduced with the purpose to demonstrate the zonality of engineering geological conditions.

引入工程地质区这个概念的目的在于说明工程地质条件的区域性。

An understanding of the semiconductor physics involved in this new technology is of great importance for every student in engineering, especially electrical engineering, microsystem technology and physics.

理解涉及这项新技术的半导体物理学对在工程方面的每个学生来说至关重要，特别是电机工程，微型系统技术和物理学。

I was up all night because I was in pain, she said.

我整夜，因为我在疼痛，她说。

A crow caws /craoks.

乌鸦叫。 51-论文网