Swamp vegetation represent the early stages of a HYDROSERE or HALOSERE.例如湖区边界、河流漫滩或者是干旱地区具有保水粘土的地段.The chloroplasts in the swamp reed were round - shaped with poorly developed grana.芦苇是一种多年生水生草本植物,其典型生境是淡水或含盐的沼泽、河边或湖边.Th...
Later air reconnaissance showed that the battleship was heavily damaged.事后,空中侦察表明,该战列舰受伤颇重.As in reconnaissance work, aerial photographic volume estimates can be satisfactory.作为森林资源概查工作来说, 航空象片的蓄积量估计值能满足要求.Refraction is ...