Designing wave - guide completely by experimental method is complicated , while design a wave - guide with cad method can not only overcome such difficulty but also analyze the characters of optical wave - guide and thus lead to a quick designation 单纯通过实验来设计光波导器件是很费时费力的，通过计算机辅助设计的手段，对光波导器件进行预设计，不但可以克服以上困难，同时能直观完备地反映光波导器件的特性，准确快速地达到预期的设计要求。
We can always dream of decent sites that make news with no earning whatsoever but considering the tiresome job that it is and how time consumming it is for people to actually look for news and report it on a 24 / 7 basis , i doubt that we will see such a thing happening any time soon 我们一直梦想着理想中的游戏网站奉献式的经营，但是想想这个费时费力的工作，编辑们天天24小时盯着那些新闻发布，我想这种理想中的经营模式以后也是不会出现的吧。
The photo - elasticity experimental method developed in 1930s had become the experimental stress analysis " leading method , but with high performance computer combined with finite element method . and the photo - elasticity method will take time and money , now it is seldom applied . so how to overcome its disadvantage and exert its advantage at calculating stress concentration factor became one new problem 二十世纪三十年代发展起来的光弹性实验方法曾经成为实验应力分析的主要方法之一，但是随着高性能与计算机有限元法的结合，加上光弹性实验方法费时费力等缺陷，进入80年代后逐渐被大型通用有限元软件所取代，运用的情况越来越少。
On the traditional artificial design method , the designer have to take a lot of time and energy to design , so it is very often to make the mistake . besides , the designers have to pay more attention to the repetitious work , so they have no more time to make creative design , as the result the development period of product is extended , the quality of product may be not very good and also weaken the market competition ability 但是轴的设计与绘图是十分繁琐且重复性很大的工作，传统的人工设计方法费时费力，且容易出错，设计人员将大量的时间和精力花费在一些重复性的工作上，缺乏更多的时间去进行创造性设计，导致产品开发周期长、产品质量差、市场竞争力弱等后果。
Most of the existing real - time processing systems for sar imaging are the special - use system . and when some parameters were changed , the system must be designed again , which takes more time and money . so a new design method must be put up to save the time and money 目前使用的sar成像实时处理系统大都是专用的，在一些参数发生变化时，就需要重新设计实时处理系统，这样的设计方法费时费力，所以需要一种适用于sar成像实时处理的通用机的出现，以缩短设计时间，降低系统的成本。
With the development of computer technology in hydrographic field , usage of many kinds of advanced and complicate algorithms is not a problem . . but because of complexity of geography , acquirement of primitive data needed in hydrographic calculation is still hard to tackle , for example , the length of river segment , the width of every node of every river segment 随着计算机技术的发展，在水文学及水资源学科，运用各种先进、复杂的专业算法求解已经不成问题，但由于地形地貌的复杂性，水文计算中所需的原始资料，如河段的长度，河段各断面上各个节点处的河宽等数据的人工实地采集工作仍然是很费时费力的事。
The standard shell schemes are installed in unison by the exhibition center . the standard shell scheme configuration includes , three - side boarding fascia board , one consulting desk , two chairs , two spotlights of 60w , and one electric outlet , 220v ( sa ) , single phrase . basic hall lighting will be provided 目前，有一些公司认为参加展览费时费力，但《贸易展览商机》的作者? ?米歇尔?豪，向展览组织者提出了能够提升展览价值、增加参展观众并吸引参展商的十大秘决：
Nowadays , at home and abroad , one of the most widely used methods is judging fish freshness by detecting the compound of decomposed product caused by adenosine triphophate in the fish ’ s tissue in a chemical way . but this method has much shortcoming like manipulating complicatedly , costing highly , consuming much effort and time . and it needs to damage fish sample , so it is difficult to generalize the method in fact 最常用的鱼鲜度检测方法是通过化学手段测量鱼体内三磷酸腺苷分解产物的成分来判断鲜度,其操作复杂、成本高、费时费力,且需要破坏鱼体样本,难以推广使用,因此迫切需要利用气敏传感器开发一种无损、快速、方便的鱼鲜度检测方法。
These include the single fiber pull out tests , single fiber fragmentation tests , etc . however , experimental work is time consuming and its outcomes are not always repeatable , while analytical solutions are not usually available for solving such complex problems as the characterizations of the interfacial mechanical properties of fiber reinforced composites 目前在这一领域内常用的研究和分析方法有试验、解析法以及数值解法。但试验方法费时费力，结果的可重现性较差，而且对纤维增强复合材料的界面问题几乎无法得到解析解。
This paper focuses on the core problem of the research of geographical hazards , hazard assessment , takes geological hazards of landslide in wanzhou as an example and attempts to use the technology of gis in hazard assessment of landslide so as to solve such problems in past geographical hazard assessment as low efficiency , bad accuracy , and waste of time and strength and to make hazard assessment of landslide informed and scientific 本文针对地质灾害研究中的核心问题? ?灾害危险性评价，以万州滑坡地质灾害为例，尝试在滑坡危险性评价中融入地理信息系统技术，以解决过去地质灾害危险性评价中效率低、精度差、费时费力等问题，实现滑坡地质灾害的信息化、科学化。
