This package may be one of many types, a cone, a tube, a dye tube or a spool, depending upon the next operation the yarn must encounter.
卷装使用的筒子形式包括：圆锥形、筒形、染纱管形或有边筒子，究竟采用哪种形式取决于下一个工序的要求。
This software package can calculate electric field in different stress cone shape by finite element method, and can present following functions: drawing equipotential line;
开发的软件包对不同的应力锥形状下的场强采用有限元方法进行计算并提供以下功能：画出任意电位的等位线；
This software package can calculate electric field in different stress cone shape by finite element method, and can present following functions: drawing equipotential line;
开发的软件包对不同的应力锥形状下的场强采用有限元方法进行计算并提供以下功能：画出任意电位的等位线；
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