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- variability in crop yields 庄稼产量的浮动性
- Fertilizer, an expensive input, does not seem to reflect in crop yields concomitantly. 化肥是一项昂贵的投入,似乎并不与作物的产量反应相符。
- Farmers can lose rather than gain if incomes fluctuate because of variations in crop yields and outputs-stable prices can then destabilize incomes. 农作物产量和产值的变化如果引致收入波动,这对农民来说就可能是有害无益,因为稳定了价格可能稳定不了收入。
- It is easy to demonstrate that the addition of inorganic fertilizers makes rapid and significant improvements in crop yields. 加入无机肥料迅速明显地增加作物产量,这一点很容易证实。
- The overall improvement in crop yields through increased use of fertilizers in related to an intensification of agriculture programs have been significantly facilitated by the use of computers. 总的说来,通过使用计算机系统等高技术大大方便了增加集约农业计划中的施肥量来提高产量。
- The crop yields for the year are phenomenal. 当年的庄稼产量是惊人的。
- Heart rate variability in preterm infant. 早产儿心率变异性的临床研究。
- Degree in crop breeding and genetics. 大田作物遗传和育种学博士。
- The temperature was a variable in the experiment. 在该实验中温度是个变量。
- Crop yield correlates closely with annual rainfall. 农作物的收成与年降雨量有密切关系。
- Climate and Glacier Variability in Western North America. 北美西部的气候和冰川变率。
- There is considerable variability in all the test scores. 所有这些考查成绩都有很大变化。
- There's too much variability in individual expression," said Dodds. 因为在个体的表达中有太多的变数。”
- It is easy to demonstrate that the addition of inorganic fertilizers makes rapid and significant improvements in crop yields 加入无机肥料迅速明显地增加作物产量,这一点很容易证实。
- Ways of Improving Crop Yield Per Unit Area and the Countermeasures. 提高作物单产的途径与对策。
- Residual Effect of Zinc Application on Crop yield, Zinc Concentration in Crop Grain and Soil Available Zinc 锌肥对作物产量、子粒锌及土壤有效锌含量的后效
- An equation or inequality relating the variables in an optimization problem. 在优化问题中,一种表示若干变量相互关系的方程(式)或不等式。
- Considering the economic benefit, mulching straw can also improve crop yields. 从经济效益来讲,还可以提高作物的产量。
- The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield. 农业生物学; 土壤生物学关于植物养分和与土壤条件相关的生长的研究,尤其是对判定如何增加农作物产量方法的研究
- Water is variable in coefficient of expansion. 水的膨胀系数是可变的。