In order to model the acoustic target scattering in the shallow water, first, the target with any kind of shape, such as a submarine, is modeled by geometric drawing software.
This paper introduces the main conditions and economic results of fiber drawing tests of boat - shaped shallow and short bushing with 6 rows of nozzles.
本文介绍了“舟型浅槽六排孔短漏板”坩埚拉丝试验的主要情况及经济效益分析。
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Using the method of the anatomic drawing, the authors studied the shallow Quaternary cover in the northwest of the Taihu Lake from an Angle of 3d stratigraphic perspective.