查询词典 amount of precipitation

Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

重金属含量均低于新鲜尾矿，但以硬化层中的含量最高(Pb、Zn含量分别为0.47%和0.93%)，往下大幅度降低，表明尾矿风化过程中形成的次生矿物对Pb、Zn等重金属元素有较强的固定作用，而次氧化带的淋溶作用造成了金属元素的大量流失；(4)与新鲜尾矿相比，硬化层中铅的可迁移性大大降低，硬化层之下尾矿样品中铅的可迁移性也不同程度降低，这是由于硫化物氧化产生的硫酸根与尾矿中的铅反应形成铅矾(PbSO_4)的缘故；(5)氧化作用使尾矿中的zn、Cu等重金属的可迁移性不同程度地增大，其中对锌的可迁移性影响最大，铜的可迁移性与铁比较相似，铅则容易与硫化物氧化形成的SO_4~(2-)反应形成铅矾(PbSO_4)；(6)为了减少尾矿污染和修复矿山环境，人们提出了各种不同的尾矿覆盖方案，本文的研究结果表明，这些方法不一定能够有效地阻滞污染元素的迁移。

The ratio of EP amount to total precipitation amount is generally increasing in most areas of China,suggesting that the precipitation event has an obvious trend of extremeness.

极端降水量与降水总量的比值表现为全国普遍增加的趋势，说明我国四季降水量均有向极端化方向发展的趋势。

Simulation results indicate that convective precipitation is almost all transformed by melting of graupels, but in unseeded clouds, the ice crystals amount is such rare that it contributes little to graupel formation.

数值模拟结果表明，青海省秋季的对流云降水几乎全部是由霰的融化形成的，而自然云中冰晶含量少、冰霰自动转化形成霰胚的过程非常微弱。

The model results show that the hail embryos are mainly graupel particles.Solid phase precipitation accounts for 46% of ground precipitation amount and graupel-fall is 65% of solid phase precipitation.Graupel particles grow by accretion with rainwater and cloud water.Accumulation zone of supercooled water...

结果表明：玛曲冰雹云中冰雹胚胎以霰胚为主；在地面降水中，固态降水占降水总量的46%，而霰占固态降水的65%，霰主要靠撞冻雨水和云水增长；雹云中存在较弱的过冷雨水累积带，累积带的维持时间也很短，累积带中的过冷雨水有利于雹块的增长，但不起主要作用；雹块的增长主要是通过雹撞冻云水，其次是撞冻雨水增长。

Based on this point of view, a mechanism for polymeric membrane formation by immersion precipitation was developed to interpreter the role of nonsolvent additive, which is helpful to select the suitable nonsolvent additive and the amount used for high performance polymeric membrane.

基于上述观点，本文提出了浸入凝胶过程中聚合物膜的形成机理，解释了NSA在浸入凝胶成膜过程中的效应，从而为选择不同的NSA和加入量，制备高性能的聚合物膜提供理论指导。

Theenvironmental risk of leachate from landfill with different operation modes depend ontheir accumulation amount rather than their sudden concentrations and fraction.(7)The high SRB metabolism activity and the accumulation of metabolitewere the main reasons of in-situ precipitation phenomenon of Cu~(2+) and Zn~(2+) inlandfill refuse in bioreactor landfill. Heavy metals in bioreactor landfill havemechanism of in-situ immobilization controlling by SRB metabolism. Thepredominant SRB in landfill refuse belongs to Desulfovibrio vulgaris sp.

7生物反应器填埋场中较高的SRB代谢活性及其逐步累积的代谢产物硫化物是填埋垃圾中的Cu~(2+)和Zn~(2+)形成硫化物沉淀而发生重金属原位固定现象主要原因，生物反应器填埋场中重金属存在原位固定的硫酸盐还原菌调控机理，初步从形态判断填埋垃圾中的优势硫酸盐还原菌属普通脱硫弧菌属Desulfovibriovulgaris sp。

Corni. On the best coordination basis of 3 factors of extracting time, extracting temperature and solid-liquid ratio, the orthogonal combination of design of quadratic regression was tested by selecting 2 factors of alcohol amount and precipitation time, and optimization on technology parameters of polysaccharide extraction from F. Corni was conducted for two times.

方法］在山茱萸多糖提取时间、提取温度和料液比3个因素最佳配合的基础上，选取酒精用量、沉淀时间2个因素进行二次回归正交组合设计试验，用响应面法对山茱萸多糖提取工艺参数进行了两次优化。

Many water basins are managed without any information on precipitation, run-off, amount of water at the ground water table.

许多水流域的管理信息没有任何降水，径流，在地下水位水量。

By comparing the carbon and oxygen isotope records of stalagmite P001 and flowstone P007 with the modern rainfall amount,it can be seen that the oxygen isotopes reflects the strength of precipitation or monsoon in annual to decadal time scale.

通过P001石笋和P007流石的碳、氧同位素记录与现代降雨记录的比较可知，在年际至10年际尺度上，氧同位素反映的为降水或者季风的强弱。

Integrated with the above ways the conclusion is gained that the main effect factor to the amount of the second-generation corn borer is the precipitation of 5-8 month.

结合几种分析方法得出：影响我省影响二代玉米螟消长的主要气象因子是5月~8月份的气温和降水。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。