It is advanced in this article that the automobile in parking area can be positioned by using the beaconing machine, and their theory and technique specialty are primarily analyzed.

提出用无线信标机来定位停车场中的汽车，重点分析了这种定位方式的原理及其技术特点。

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As I drove home from dinner that night, I began think about how that machine replaced at least three parking attendant jobs.

FORBES: For Small American Manufacturers, U.S. Isn't Big Enough Anymore

Logic would tell me that it created fewer jobs than it replaced, otherwise the cost of the machine would exceed the cost of the attendants and not be a good investment for the parking lot owner.

FORBES: For Small American Manufacturers, U.S. Isn't Big Enough Anymore