bulk weight的用法和樣例：
例句
- The bulk weight and total flour extraction rate were more sensitve to nitrogen and phosphorus supply than 1000-grain weight.
氮磷水平與比例的提高，對各基因型千粒重的影響很小，卻使容重顯著降低，總出粉率普遍顯著增加。 - An amendent should decrease bulk density, increase toltal porosity, and incr ease water and air content.
改良劑能降低容重，增加總孔隙度，增加水和空氣的含量。
