Many forest tree species have multiple archegonia which, after fertilization produce a number of proembryos.许多林木树种都有颈卵器, 受精以后便产生许多原胚.A similar section through the female plant reveals several bottle - shape archegonia , ...
Camphor is soluble in alcohol.樟脑在酒精中可以溶化.Metals which were mutually soluble would tend to give strong junctions.可互溶的金属趋向于产生牢固的结合点.This paper studied the extraction technique of water - soluble polysaccharides and Ampelop...
Experiments showed Chlorothalonil and Bordeaux mixture were effective fortheir control.药效试验百菌清和波尔多液效果好,防效达90%以上,可作大面积防治选用药剂.The analysis of chlorothalonil and procymidone by GC was introduced.论述了在同一气相色谱条件下测定百菌清、腐霉利含量的方法....
a fringe of woodland一条林带The castle rises in solitary splendour on the fringe of the desert.这座城堡巍然耸立在沙漠的边际,显得十分壮美.This city is located on the southern fringe of the desert.这个城市处于沙漠南缘....