Sweep signal generator is a device that generates excitation signal.
扫频信号发生器是一种信号激励装置。
Multi-Beam Echo Sounder is an absolutely necessary seafloor mapping device with high accuracy and high efficient at 21st century. It is much fitted to sweep mapping for wide area.
多波束测深仪是高精度、高效率的地形测绘设备，适合大面积的扫海测量作业，是21世纪水下地形测量必不可少的测绘仪器。
Standard equip needle give the cloth, put and send the cloth, sew and sweep the line device.
标准装备了针送布、下送布、倒缝及扫线装置。
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