There were three more products which all took significantly longer amounts of time, considering the amount of data scanned and length of time to scan.
有三个以上的产品都持着延长了大量的时间，考虑到数据量的扫描和时间扫描。
To ensure the quantity of collected joint samples enough, and at the same time, to save surveying workload, the optimum scan line length should be determined first of all.
为了保证采集的结构面样本数量足够多，同时又使测量工作量最省，测线法应用时首先需要确定一个能够保证测量精度的最小测线长度——最佳测线长度。
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