Uniform irrigation requires that this period of time be no longer than one fourth of the total irrigation period.

均匀灌溉要求灌水时间不长于总灌水时间的四分之一。

youdao

In 2009, China spent about Rmb10bn on improving irrigation – 1/1000th of the total loans disbursed that year.

在2009年，中国在改善灌溉方面的花费约100亿元人民币——只占当年总贷款额的千分之一。

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Test the gastric acid secretion, PH, total gastric acidity value, total pepsin activity of change after irrigation.

测定给药后大鼠胃液分泌量、胃酸ph、胃液总酸度值、胃蛋白酶活性的变化。

youdao

There are currently about 1, 700 small-scale storage reservoirs across England and Wales, supplying 30% of total irrigation needs.

BBC: Science & Environment

Because much of the loss to insects and diseases occurs after the plants are fully grown, the use of genetically engineered varieties that have higher post-harvest yields means that the farming (and irrigation) of fewer plants can produce the same total amount of food.

FORBES: Move up http://i.forbesimg.com t Move down