1. Methods The arithmetic chooses variables based on the values of variable importance and the stepwise iteration. 方法采用变量重要性评分和逐步迭代算法选择有作用的变量；
2. The temperature compensating model is gained in the help of the method of stepwise regression by temperature experiment repeated, and its applicability is validated. 通过重复性温度实验，利用逐步回归法得到了温度补偿模型，并对模型的实用性进行了实验验证。
3. The uniform design of experiment is used and the stepwise technique is adopted to analyze the result, so that the sensitivity and compatibility among bas oil and additives are studied. 本文应用均匀设计试验方法，用逐步回归对试验结果进行处理，分析了基础油对添加剂的感受性及添加剂之间的配伍性。
英英解释
adj.
1. one thing at a time
2. proceeding in steps
