The "cumulative row to binary number" mapping is the same as the previous mapping, but you keep a cumulative sum — a running total — of the row values.
“累积行到二进制数”的映射与上一个映射一样，但是累积行值——每次计算总值。
2
The fields (reference, date, buyer, address, and total) are written according to the mapping table.
根据映射表编写字段（reference、date、buyer、address 和 total）。
3
Sales of surveying and mapping equipment from conventional optical theodolite, Level electronic Total Station, GPS and software.