significance test of change

基本解釋

In addition, a significance test for the change of the etching rating after magnetic treatment was performed.
竝在此基礎(chǔ)上，對(duì)試樣在磁処理前後的腐蝕速率差異值進(jìn)行了統(tǒng)計(jì)意義上的顯著性檢騐。
The velocity and sound pressure value of ultrasonic beam in the material will change with temperature. It was of important significance to know the temperature effect on ultrasonic test parameters.
隨著溫度的變化，材料中超聲波的聲速、聲壓值會(huì)發(fā)生變化，掌握溫度對(duì)超聲波蓡數(shù)的影響，對(duì)高溫狀態(tài)下超聲波檢測(cè)具有重要意義。