It is inconvenience to read the level without transmission line, especially in larger than 1 meter measurement range.
由于测量中若不加传输电缆，读数不方便，特别是在测量范围1米以上的测量中，操作困难。
It is inconvenience to read the level without transmission line, especially in larger than 1 meter measurement range.
由于测量中若不加传输电缆，读数不方便，特别是在测量范围1米以上的测量中，操作困难。
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