Because of that both the greyspots and the performances of the rail resistance welding joints are under the synthetical influence of many parameters, the orthogonal design was used to settle tests.
由于钢轨接触焊接头灰斑与性能受众多参数综合影响，故采用正交设计安排试验。
2
It's a normal skin color, the one it generally presents, is either red or brown or even grey, and it's speckled with dark spots.
它通常呈现的是一种正常的皮肤颜色，要么是红色，要么是棕色，甚至是灰色，还有一些黑斑。
3
Delicate panels of burnished gold radiate from a grey body, finishing in cobalt blue spots around the edges.