查询词典 phosphorus

32P isotope tracing technique was used in this study,and the results indicated that phosphorus stored or pre-existed in roots would be remobilized in maize under phosphorus deficiency from root cortical cells with lysis to shoot mostly rather than root apex during aerenchyma formation.

Kraus等的试验表明玉米根系从土壤中吸收的32P可在根皮层内保留15 d，之后逐渐减少[2]。这意味着与叶片的情形相似，根内也进行着磷的活化和再运转。当植物处于磷胁迫下时，根系吸收的磷素远不能满足植物各器官生长发

Currently, the impact of excessive phosphorus on water bodies focuses on eutrophication and algae overrun, which have been the hotspots and intractable problems for environment protection in China, essentially an outcome of the concentration of the compounds of nitrogen and phosphorus, and the heavy reproduction of aerobe.

当前过量磷对水体产生的影响集中地表现为富营养化和藻类繁生现象，其实质是耗氧有机物及氮、磷化合物的生态环境效应。它们已成为我国环境保护的热点甚至是十分棘手的控制治理问题。

This paper relates to the preparation of phosphorus pentafluoride and the solubility of phosphorus pentafluoride in aether.

本论文对以五氧化二磷和无水氟化氢为原料制备五氟化磷的工艺和五氟化磷在乙醚中的溶解度进行了初步研究。

On the presentation of Mn-P fixation, this paper reviews the latest advances in recent 10 years and concentrates on the mechanism of phosphorus fixation in acid soils. In addition, it brakes through the classical inorganic P fractionation in to Fe-P, Al-P, O-P and Ca-Pin the traditional P classification and considers Mn-P as one of the main phosphorus fixation modes in latosols, cultivated from the parent basalt material. Furthermore, fixation of P by Fe, Al, Mn is compared, and differentiation from chemical availability and bioavailability of P discussed. Based on the above, this paper presents some alienable measures for enhancing P utilization efficiency and postulates pivotal future research directions in the field of P fixation.

本文以Mn-P的提出为出发点，论述了近10年来对酸性土壤固磷机理研究的新进展，突破了常规P素形态分级研究中分为Fe-P，Al-P，O-P和Ca-P等无机磷测定的经典分级，认为玄武岩母质砖红壤中的Mn-P是P素固定的主要形式之一，进而比较了Fe、Al、Mn对P固定作用，并从P的化学有效性与生物有效性差异等方面进行了比较全面的论述，提出了减少P素固定提高磷肥利用率的措施及今后的重点研究方向。

White phosphorus is a common allotrope of the chemical element phosphorus which has found extensive military application as an incendiary agent, smoke-screening agent, and as an antipersonnel flame compound capable of causing serious burns.

白磷属于磷元素的一种同素异形体，这种化学物质被广泛应用于军事燃烧弹，烟幕弹的制作中，其杀伤性燃烧混合物可以造成严重的烧伤。

Feldspars (including albite and K-feldspar) and amblygonite are the main reserves of the whole-rock phosphorus in the Yashan topaz-lepidolite granite, and the contribution of feldspars to whole-rock phosphorus is related with the crystallization of amblygonite.

长石及磷锂铝石是雅山黄玉锂云母花岗岩中磷的主要贮体，磷锂铝石的出现与否直接影响了长石的磷含量及其对全岩磷的贡献率。

If without amblygonite in crystallization assemblage, the feldspars contribute above 70% of whole-rock phosphorus, otherwise the amblygonite is the main reserves of whole-rock phosphorus and the feldspars are the subordinate.

无磷锂铝石晶出时，长石磷对全岩磷的贡献率达70％以上；当具磷锂铝石晶出时，磷锂铝石为全岩磷的主要贡献，长石降为次要地位。

This phenomenon is supposed to be due to the abundant animalcule and active organic oddment in the surficial sediments and decomposition of organic matter and phosphorus compounds, leading to the dissoluble phosphorus into the pore water.

沈积物和孔隙水中磷的剖面特徵研究表明，表层沈积物和孔隙水中的磷都有明显上升的趋势，是由於沈积物的表层微生物和活性有机碎屑层比较丰富，有机质降解和含磷的有机化合物分解，使溶解性磷酸盐进入孔隙水。

Among all OMRP treatments, biggest change range appears in IMRP12 followed by IMRP10 and IMRP13.There was positive correlation between change range and increasing rate of available phosphorus. There was positive correlation between increasing rate of available phosphorus and decreasing amplitude of XRD argentite's main peak value.

这一结果与6种磷矿粉的活化效果，即磷矿粉活化前后有效磷的增加值相一致，说明活化剂通过降低磷矿粉X-衍射主峰的峰值改变了磷矿粉的结构，由此提高了磷矿粉的化学有效性。

With the use of an additive and treatment of technical phosphorus by dilute nitric acid, the arsenic content in the phosphorus can be reduced from 19010-6 to 3.010-6, thus 95% of arsenic is removed.

通过使用添加剂，用稀硝酸溶液处理工业黄磷，可使黄磷中砷含量由190×10－6降至3.0×10－6，脱砷率达95％。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。