Warning: file_put_contents(): Only 0 of 6273 bytes written, possibly out of free disk space in /www/wwwroot/ppbbbu/202081.com/index.php on line 55 rating scales method例句_rating scales method英汉例句_rating scales method双解例句_2020年的事情英文词典
Distribution and damage of wheat field weeds in Lanzhou district were studied by the rating method with five scales during 1988-1990. 1990年，笔者用五级目测草害调查法调查了兰州地区麦田杂草的发生与危害情况。