论文部分内容阅读
L表示一张正交表。L右下脚码“8”表示这张表有8个横行(简称行)需要做8次试验或8个处理。括号内右上角的数字“7”表示这张表有7个纵列(简称列),若用这张表安排试验最多可以安排7个因子。括号内底数“2”表示这张表内除列号和试验号外只有“1”和“2”两个字码,试验时表示各因子取两个水平。即“1”水平和“2”水平。“2～7”表示全面试验要做2～7次。 L_8(2～7)-L试验次数(水平数列数),读做L-8-2-7。
L represents an orthogonal table. L lower right foot code “8” indicates that this table has 8 rows (referred to as row) need to do 8 trials or 8 processing. The number “7” in the upper right corner of the brackets indicates that the table has seven columns (short columns). If you use this table to schedule experiments, you can arrange up to seven factors. Bottom of brackets “2” means that the table in addition to the serial number and test number only “1” and “2” two words, the test means that the two factors take two levels. Ie “1” level and “2” level. “2 ~ 7” means a full test to be done 2 to 7 times. L_8 (2 ~ 7) -L Test times (horizontal number of columns), read as L-8-2-7.