As engineering becomes more and more precise , better accuracies than this will be needed .

随着工程需求越来越精确，我们需要比这更高的精确度。

The precise & fine hand scrapping on all contact surfaces ensure the accuracies are held throughout machine life .

精确与精细手工拆解所有接触面的精度确保整个机器寿命耐用。