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and height difference.(測繪方法測量【即,geodetic型的變形監(jiān)測測量工作】包括水平角或方向的觀測【observable觀測n.,詞性變換】;空間距離;高差【height difference】的觀測【observable觀測n.,詞性變換】)Geotechnical measurements consist of similar geometric quantities, but over a much smaller extent than for geodetic measurements (distances to a few meters rather than hundreds of meters), as well as measurements of the physical or mechanical state of the object being monitored.(土木技術(shù)方法的測量工作由類似的幾何量組成,但是比測繪法測量(距離上從幾米),The survey methods can be further subdivided into the survey network method and direct measurement method. (測量方法可以進(jìn)一步細(xì)分為【subdivide細(xì)分】測量網(wǎng)和直接測量法。Unit 19 Deformation Monitoring of Engineering Structure(工程建筑【Engineering Structure或者工程結(jié)構(gòu)】的變形觀測)Overview(概述【Overview縱覽、總的看法】)Deformation refers to the changes of a deformable body (natural or manmade objects) undergoes in its shapes, dimension and position in space and time domain.(變形指一個(gè)形變體【deformable body】(自然或人工物體)在空間和時(shí)間范圍【domain領(lǐng)域、范圍】在形狀、尺度和位置上經(jīng)受【undergo經(jīng)受、收到】的變化)【變形指一個(gè)形變體在空間和時(shí)間上經(jīng)受的形狀、尺度和位置的變化】Due to factors such as changes of ground water level, tidal phenomena, tectonic phenomena, etc, engineering structures (such as dams, bridges, high rise buildings, etc.) are subject to deformation.(由于【Due to】諸如地下水位變化、潮汐現(xiàn)象、地殼構(gòu)造【tectonic構(gòu)造的、地殼構(gòu)造的】現(xiàn)象等等的因素【factor】,工程建筑物(如大壩、橋梁、高層建筑等等)受到變形【deformation】影響【subject受……影響】)Deformation of engineering structures is often measured in order to ensure that the structure is exhibiting a safe deformation behavior.(工程建筑物的變形經(jīng)常觀測以保證建筑呈現(xiàn)【exhibit展現(xiàn)】安全變形行為)【工程建筑物的變形經(jīng)常觀測以保證建筑物的變形在安全范圍內(nèi)】Cost is more than offset by savings and by improvements in safety both during and after constructions.(As a result, the design, execution and analysis of such surveys are a matter of considerable practical importance.(作為結(jié)果,這種測量的設(shè)計(jì)、實(shí)施和分析是一件有著相當(dāng)大【considerable相當(dāng)大的】的實(shí)際【practical實(shí)際的】重要性【importance重要性】的事情)Expanded resource development, the trend towards pote