water drum的用法和樣例：
例句
- Thisis a set of six rations consisting of a biscuit substitute, algae hard tack,algae crackers, coffee bag, coffee can, and water packet.
這是一套六包的口糧組成的餅乾代替，藻類硬釘，藻類餅乾，咖啡袋，咖啡可以和水包。 - In the experiment, with the increase of water cut, the frictional pressure drops decrease sharply when water disperses in oil but hardly change when oil disperses in water.
本實驗範圍內，當管內液相處於油包水時，摩擦壓降隨含水率的增大急劇減小，當液相處於水包油時，隨著含水率的增大，流動摩擦壓降隨含水率的增大變化平緩。
