Based on the balance equation of soil nutrient and the law of the minimum limiting factor, some general principles are proposed for making fertilizer application tactics.

由土壤养分平衡方程和最小限制因子定律，讨论了因时因地制定施肥策略的必要性。

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This alleged iron law of wages declares that wages can never rise above the minimum requisite to keep the laborer in bare existence as a laborer.

这条所谓的工资铁律宣称，工人的工资绝不可能上涨到劳动者作为劳动者必须维持其最低限度生存的最低工资水平以上。

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But in 1984 Ronald Reagan oversaw the passage of the "21 law", which requires states to set 21 as the minimum drinking-age or risk losing 10% of their highway funds.

但是1984年里根监督通过了“21岁饮酒法”，要求各州把最低饮酒年龄设成21岁，否则将可能失去10%的高速公路拨款。

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Anticipating resistance, his advisers are already working on a draft of the law on minimum service, so as to curb the effectiveness of strikes.

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The amended law raised the minimum punishment for anyone convicted of raping a minor to 20 years and allowed the death penalty in extreme cases.

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Val Cameron, of Health Protection, said the law will ensure there is a minimum standard to make sure the condition of homes are up to scratch.

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