查询词典 degraded

Rhodamine B and p-Nitrobenzoic acid were taken as examples, we studied their oxidative reaction and degraded products in detail.

并以罗丹明B、对硝基苯甲酸为例作了较为详细地研究和降解碎片分析。

Several representative regions including humid subalpine area, arid valley and the adjacent recovery area and the plateau region of Minjiang riverhead were selected to study the soil nutrient and biodiversity change. Based on field vegetation investigation, soil sampling and analyses, Ecological effects of land use/cover in these regions were discussed. Also in corporation with the social and economic data, the recovery methods of different degraded region were put forward.

研究选取亚高山湿润区域，半干旱河谷区及其恢复区，岷江源头高原面区域作为重点，通过大量的野外植被调查，土壤采样分析，多元统计方法等研究典型区土地利用／覆被变化的生态效应；并根据社会经济资料和调查数据和土地覆被-土壤相互作用规律，提出了岷江上游生态恢复对策。

Although hydroxyl radicals are degraded by pollutants, says Rohrer, some of these same molecules also help to recycle OH.

虽然氢氧自由基因为消灭污染物而减少，Rohrer说，但是也有些相同的分子能帮助它们再生。

As one key part, the effects caused by rounding error are analyzed mathematically and it is concluded that the effects can be degraded by an appropriate selection of coefficients in the iteration formula.

然后分析了该算法量化误差中的舍入误差所带来的影响，并提出该误差可以通过对迭代方程中的系数进行合适取值来降低。

If the training samples fail to represent the sample space, sometimes the predictions of new samples can be degraded.

由于多元校正的样品光谱空间的多维性和复杂性以及样品选取过程中的不确定性，准确估计训练集样品在整个样品空间的代表性尚存在一定困难。

The misuse and destruction to the land, as well as the excessive feed aggravated the pressure to the grassland, resulted in severe degraded vegetation, accelerated the transformation from grassland to plowland, sandlot and unused-land, destructively impacted on the vulnerable ecology of the study-area.

人为对草地的滥用和破坏，以及过度放牧加重了对草地压力，使得植被严重退化，加速了向耕地、沙地和未利用地的转化，给当地脆弱的生态环境造成破坏性影响。

What's more, a certain amount of LCB degraded to be linear chains again due to the scission approaching the branching point in intense mixing condition.

虽然转速这一参量不能很好的描述具体的加工流场，但对于聚合物链的裁剪还是具有指导性意义。

The results indicated:During the course of vegetation natural recovery, there are different stage of secondary sere at different degree of degraded lands, that is secondary herbosa; secondary scrub; masson pine coniferous forest; conifer and broad-leaved mixed forest; every green broad-leaved forest.

本项研究从比较生态学入手，分析了千岛湖地区退化森林生态系统不同植被恢复措施，即：自然恢复、人工促进自然恢复和人工恢复措施下的群落生态变化，比较了不同措施之间的生态响应差异，研究结果表明：①在植被自然恢复过程中，由于生态系统退化程度的不同，存在草灌丛、灌丛、马尾松林、混交林和常绿阔叶林整个演替序列。

Due to forward-bias-induced annealing effects,the laser diode biased during irradiation is less degraded than that short-circuited,and annealing curves can be fitted sectionally with different annealing rates.

激光二极管辐射损伤存在着正向偏置退火效应，FP和DFB结构的二极管具有相似的加电退火规律，均可拟合成指数衰减形式，退火曲线可以分成退火常数不同的几段进行拟合。

From the above theorem,（1） compositional invariant security properties and constructive security properties are proved to exist, and （2） security properties are degraded under operators of process algebra, which is known as "bucket principle", i.e, a composed system cannot be securer than the weakest link of the system.

根据这一结果证明了复合不变性质和可构造安全性质在安全性质集上的存在性，并且在安全性质集合上证明了安全性质的"木桶原理"，即复合系统的整体安全性不强于系统中最弱的部分。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。