It is a key factor for large cross section box culvert to form good slurry sleeves.
形成良好的泥浆套是大断面箱涵顺利顶进施工的关键。
RCS (radar Cross Section) is a key factor in designing stealth weapons, so the research of radar targets scattering characteristics has become the foundation of stealth technologies.
雷达散射截面(RCS)是隐身装备外形设计的一项重要指标，研究雷达目标的电磁散射特性已成为目标隐身设计和目标识别的基础。
The position of the least square center for a cross section in the absolute coordinate system is an important factor that affects cylindrical form errors.
截面最小二乘圆心在绝对坐标系内的位置是影响圆柱度形状误差大小的重要因素。
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