不实用的

A very large challenge for us is maintaining our commitment to those areas of knowledge that do not appear instrumentally valuable in the very short run.

第三点，……我们现在面临的挑战是保持我们对那些从目前来看不是很有实用价值的知识领域的承诺。

The classifications, characteristics and recent applications of sliding construction are summarized. Some key technologies of sliding construction such as calculation of sliding drift load, sliding nonsynchronous affection, sliding dynamic response, stability of sliding blocks, and affection on structural mechanics for different sliding blocking have been researched, and the corresponding programs have been coded.

总结了滑移法施工的分类、特点以及应用情况，对于滑移法施工牵引力的计算、滑移不同步影响、滑移法施工激振影响、滑移施工过程中的单元分块稳定性研究、滑移分块对结构成型影响等关键问题进行了理论推导与算例分析，并编制了相关的实用程序。

It can improve the precision of the efficiency coefficient and STOD, at the same time it do not increase the computational complexity, so there are some use value.

该方法能提高出力系数的精度，从而达到改善短期优化调度精度的目的，同时它不会增加短期优化调度的计算量，因此具有一定的实用价值。

The reliability of measusement with either traditional or modified tape was dependent on well-defined standardized measurement procedures in this study. Owing to the advantages in application of the modified-tape in measurement. Such as the quantification of controlling tensibility of tape, less restriction of the chest mobility during measurement, and cheapness in modification. The clinical application of modified-tape measurement of chest excursion with well-defined standardized procedures was suggested.

所以，如果能够依循统一的测量方法与程序，使用传统皮尺或改良皮尺测量都具有其可信度，至於改良皮尺，确具有其优点，如可定量地控制皮尺松紧度，减少深呼吸时胸腔活动所受到的限制，同时改良皮尺的装置既不昂贵，且制作容易，在临床上应具有其实用价值。

Furthermore, this paper develops a practically seismic design method of the middle-rise or low-rise symmetric structures with unsymmetrically viscous dampers on the basis of the theoretical analysis and provides corresponding formulas to obtain the translation-torsion coupling seismic response.

此外，在理论分析的基础上进一步提出了中低层对称结构不对称安装粘滞消能器时的实用抗震设计方法，推导出了相应的平扭耦合地震作用的计算公式。

In this paper, the author analyzed the popular but confused phe nomena from the point of view of toponomy, psychology, history and culture.

文章 从地名学、心理学、历史学、文化学等不同角度出发，对这种看似时尚实则混乱的现象进行剖析，认为旅游城市的更名要兼顾历史与现实，不能盲目地更名，否则会顾此失彼，以至产生认识、实用及管理方面的混乱。

In this paper, basted on the sum-up and investigation of simulation calculation of long-span bridge construction in nation and international, the detailed approach of imitated calculation of long-span CFST arch bridge is given out, and the reason why the general backward analysis is not suitable for the application of the rib-hoisting of CFST arch bridge is analyzed. And an applied method for forward analysis based on iterative theory is put forward.

本论文通过对国内外桥梁施工仿真计算成果的总结和研究，给出了大跨度钢管混凝土拱桥仿真计算的具体步骤，分析了一般的倒退仿真计算方法不适合应用于钢管混凝土拱桥吊装的原因，并为此提出了基于迭代理论的前进分析实用方法。

This study presents the fertility results of sows inseminated with semen after various intervals of storage in this medium.

本文叙述了保存的猪精液在不同时同内母猪受胎产仔的效果，肯定了这种保存液的实用价值。

For this reason, by means of leading in the concept of device clock error, the authors propose a new data synchronization method based on device clock error.

为此，文章通过引入装置时钟差的概念，提出了一种基于时钟差的数据同步方法，该方法以乒乓对时为基础、参考向量法对时作辅助，解决了自愈环网双向通道路由不一致时数据的同步问题，具有很好的实用价值。

The local Directional drilling is just staring in terrane, the equipments and the technologies cant satisfy far and far the spot construction needs, according to current circumstance and considing the existed equipments, the author put forward drilling by air hammer in terrane , having designed compounded-drilling tools,and recommended technology parameters.producing experiments have obtained good achievements in economic and in techniques.

国内定向钻进铺管技术在岩层只是刚刚起步，设备、工艺远远不能满足现场施工需要，本文针对国内、外岩层定向钻进非开挖设备及工艺现状，结合国内大多施工单位的已有设备，提出岩层空气潜孔锤导向钻进工法，设计了适合岩层钻进的实用钻具，并提出具有针对性的工艺参数，生产性试验取得了良好的经济技术指标。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。