一条普遍的规则是：对体型较大型的植物浇水次数最好要少(例如：一周一次)，不过浇水时让它们被水浸泡更长久，这样水才能抵达它们的深根。
As a general rule, it's better to water larger plants less often (say, once a week), but to soak them longer so that the water can reach their deeper roots.
研究发现，溶剂体系、反应温度、凝胶清洗用剂及洗滤次数等对所得的粉体粒度有较大的影响。
The results show that solvent system, reacting temperature, washing agent and washing-leaching times can influence the perticle size of HAP powder.
结果实验表明，煎煮次数、溶媒用量对吴茱萸次碱的提取影响较大，煎煮时间则次之。
Result The experiment show that decoction time and menstruum dosage have the evidence influence on extracting rutaecarpine, and decoction hour take second place.
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