常見例句雙語例句Distribution and damage of wheat field weeds in Lanzhou district were studied by the rating method with five scales during 1988-1990.1990年,筆者用五級目測草害調(diào)查法調(diào)查了蘭州地區(qū)麥田襍草的發(fā)生與危害情況。 返回 rating scales method