英语翻译The second kind (geometrically open,mathermatically clos
英语翻译
The second kind (geometrically open,mathermatically closed),illustrated in Fig.18-1(b),must have a closing reference direction-for example ,line EAz MK2 .Closed traverses provide checks on the measured angles and distances ,an extremely important consideration .They are used extensively in control ,construction ,property ,and topographic surveys.
请不要用翻译工具直接翻译，
The second kind (geometrically open,mathermatically closed),illustrated in Fig.18-1(b),must have a closing reference direction-for example ,line EAz MK2 .Closed traverses provide checks on the measured angles and distances ,an extremely important consideration .They are used extensively in control ,construction ,property ,and topographic surveys.
请不要用翻译工具直接翻译，
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