life fish carrier是什么意思

用法例句

In veiw of many difficulties in unfolding taper tubes in the course of manufacturing tanks of gas unloading bulk cement delivery tanker,the author presents the method of drawing taper tubes unfolded drawings through selecting points and calculating by analysis method.

针对气卸散装水泥车V形罐体制作中锥筒放样难度较大的情况,提出了通过解析法选点计算画出锥筒展开图的方法。