固体激光测距仪的电路设计文件，绝对难得的资料，也是从朋友处要来-Solid-state laser range finder circuit design file, the information is absolutely unique, but also from a friend to come. . .

激光测距仪发射电路设计方案，由于作者保密需要，略去了部分详细信息。-Laser range finder transmitter circuit design, because of the need for confidentiality omitted some details.