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- These data indicate that despite the severe P deficiency of this soil, soybean yield was first limited by nitrogen availability. 这些数据表明，尽管该土壤严重缺磷，大豆产量也首先是受氮有效性的限制。
- The soil nitrogen availability and relative nitrification ratio along the gradient differed greatly being significantly higher in urban than in rural area (P<0.05). 城乡梯度不同位置森林土壤有效氮及其各组分与相对硝化速率的差异明显，城区均显著高于乡村(P<0.;05)；
- Nitrogen availability in soils planted with two vegetable plants 菜田土壤有效氮的动态研究
- Air consists chiefly of nitrogen. 空气主要由氮气组成。
- His eloquence did not avail against the facts. 他的雄辩在事实面前不起什么作用。
- Joe tried to pull the heavy cart, but to no avail. 乔想拉那部笨重的大车，但是拉不动。
- Effects of plastic film mulching periods on the soil nitrogen availability in semiarid areas 半干旱地区不同地膜覆盖时期对土壤氮素有效性的影响
- Nitrogen forms most of the Earth's air. 地球上空气的大部分成分是氮气。
- Effects of soil nitrogen availability and clonal integration on the branching behaviors of Zoysia japonica 土壤氮素有效性与克隆整合性对结缕草分枝行为的影响效应
- Nothing could avail the dying patient. 没有任何东西能挽救那个濒死者
- The lamp is full of gaseous nitrogen. 灯里充满了气体氮。
- Nitrogen forms about 78% of the earth's atmosphere. 氮约占地球大气的百分之七十八。
- The advice we got was of no avail. 我们得到的建议完全没用。
- Such a statement will not avail. 这样的声明没有什么用。
- The medicine did not avail against the disease. 这种药对这种病没有产生疗效。
- Speeches and protests were of no avail. 演讲和抗议全都徒劳。
- We tried to revive him but without avail. 我们试图使他苏醒,但没有成功。
- Vitousek P M.Matson P A.Cleve KV Nitrogen availability and nitrification during succession:Primary,secondary,and old-field seres 1989(2 安韶山.;黄懿梅
- Nadelhoffer K J.Aber J D.Mellilo J M Fine roots,net primary production,and soil nitrogen availability:A new hypothesis 1985 陈金林.;许新健
- Effects of Stand Age and Management Practice on Soil Nitrogen Availability under Plantations of Pinus sylvestris var. Mongolica in Southeastern Keerqin Sandy Area, China 林龄与管理对沙地樟子松人工林土壤氮素有效性的影响
