back work ratio

基本解釋

Works great with large images, when you need to work closely. Fast way to fit the image to screen and then zoom back into another area with the previous zoom ratio quickly.
你能很快地讓圖像的大小和角度適合屏幕，并且能快速方便地復(fù)位到之前的角度和比例。
In this work, the questionnaire was used for collecting data. Totally 268 questionnaires were sent out while 142 valid ones were got back. The ratio of valid questionnaire is 53%.
本研究采用問卷調(diào)查方法進(jìn)行了數(shù)據(jù)收集，共發(fā)出調(diào)查問卷268份，回收有效問卷142份，有效問卷率為53%。