通过分析、推算和实船测试，阐述了船舶转向对测量深度的影响问题。
The problem of vessel turning effect on surveying depth have been described through analysis, calculation and actual surveying of vessel in the paper.
目的研究楔形因子与照射野大小和测量深度的相关性，为临床准确使用该因子提供依据。
Objective to study the relation between the field size and depth of Fw (wedge factor) and its effect on the clinical usage.
采用的静态精度评估方法就是在多波测深系统静止的条件下考核其对同一位置测量深度的误差；
The static precision evaluation method is to measure the error at the same depth under the static condition of the system;
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