您要查找的是不是：
- contamination precipitation 杂质的沉淀
- There will be precipitation on northern hills tonight. 今夜北部山区有降雪。
- Precipitation in the form of pellets of ice and hard snow. 冰雹以冰和硬雪块颗粒的形式下落
- Contamination can't be ruled out entirely. 污染是不能完全清除的。
- The brass surface must be free of contamination. 黄铜表面必须未经沾污。
- Such contamination has been extensively studied. 人们对这种污染进行了大量研究。
- Moral contamination or corruption. 腐蚀精神上被腐化或堕落
- The contamination should be removed. 应该清除掉污染。
- Precipitation might spoil things. 轻举妄动会把事情弄得不可收拾。
- An abnormal fear of dirt or contamination. 不洁恐怖对污物或污染的异常恐惧
- Is it too much to ask for a little precipitation? 只是下点小雨也不可以吗?
- No product contamination absolute tightness. 没有产品污染的绝对气密性。
- Save fuel and reduce noise, no precipitation. 节省燃油，降低噪音，无沉淀。
- Methods:Sulfate ion precipitation method was used. 方法:采用硫酸根离子沉淀法。
- The other part is just contamination. 其他部分只是污染之物而已。
- Calculate The Precipitation In Here The Distance. 我在这里计算沉淀的距离.
- We have five minutes before oxygen contamination. 在氧化之前我们有五分钟时间
- Is a kind of spirit of precipitation. 是一种积蓄已久的精神沉淀.
- The storm brought several inches of precipitation. 暴雨带来了几英寸的降雨。
- Contamination leads to lower yield. 污染导致产。
