The dimension inspection should be finished before the assembly and the welding and after the final welding, and it should be recorded immediately.

尺寸检查应在组对、焊接前和最终焊接完成后立即进行并记录。

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A mathematical analysis for PLS main component was finished, and the ability of reducing dimension and noise filtration of this method was discussed.

对PLS的主矢量所张成的子空间进行了数学分析，并对该方法的降维去噪能力进行了讨论。

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Results showed that compared with sand casting castings, dimension precision and quality of lost pattern castings can be improved and rate of finished products can be increased up to65percent.

结果表明，与砂型铸件相比，消失模法生产的铸件尺寸精度及质量提高，工艺出品率提高到65%以上。

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