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1·The development of controllable certain torque pre-loading machine effectively solves the domestical problem of oil filter semi-automated assembly.

可控定扭矩旋紧机的研制有效解决了滤清器半自动化装配的国产化问题。

2·First international and domestical present situation and developing trend of aluminium industry were reviewed, and domestical current situation of aluminium industry were analysed and forecasted.

本文首先对国际、国内铝工业的现状及其发展趋势作了评述，并对国内铝工业目前出现的形势进行了分析和预测。