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- Humic acid extracted from peat was classified into seven fractions by alcohol precipitation technique for the analysis of thermolysis,flocculation limit and some optical properties. 结果表明，酒精沉淀分级法是按分子量大小、缩合程度的高低将胡敏酸分成较均一的级分，而对胡敏酸的性质、结构等无破坏作用。
- Surely there is a limit to what one can bear. 人的忍耐肯定是有限度的。
- The proposal set a time limit of one year. 提案规定了一年的限期。
- What's the speed limit on the motorway? 高速公路的速度限制是多少?
- He was had up for exceeding the speed limit. 他因超速行驶而遭控告。
- He weighed in at several pounds below the limit. 他赛前量体重比规定限度少几磅。
- We must try and limit our expenditure. 我们必须设法限制我们的开支。
- His speech ran over the time limit. 他的讲话超过了规定的时间限制。
- The speed limit is 40 miles per hour. 规定的最高时速为40英里。
- There's a limit to how much I'm prepared to spend. 我准备花多少钱是有限度的。
- Limit your expenditure to what is essential. 你要把开销限制在必要的范围内。
- I must tell you that his patience has its limit. 我必须告诉你，他的耐心是有限的。
- He is fined$50 for exceeding the speed limit. 他因超速行车而被罚款50美元。
- The speed limit on this road is 70 mph. 这条路的车速限制是每小时70英里。
- The time limit stipulated in a prompt note. 交割期限交割通知单的时间限制
- You could win millions! The sky's the limit! 你有可能赢数百万.;无尽无休！
- A withdrawal limit of $200; no minimum age limit. 提款数量最多不超过200美元; 没有最低年龄限制。
- She was driving at well over the speed limit. 她开车的速度远远超过了速度限制。
- We must limit ourselves to one cake each. 我们必须限定每人只吃一块蛋糕。
- She has reached the limit of her patience. 她已到了忍无可忍的地步。
