查询词典 n-heneicosane

The main conclusions were summarized as follows,(1)Filamentous periphyton in the wastewater treatment system showed nitrogen and phosphorus removal efficiency,and the average removal rates of NH_4~+-N,NO_3~--N,TN,PO_4~(3-)P and TP reached 60.5%, 52.4%,68.4%,71.9%and 74.0%,respectively.

研究结果主要体现在以下几方面：(1)丝状周丛藻类对水体中的氮、磷均具有显著的去除效果，对NH_4~+-N、NO_3~--N、TN、PO_4~(3-)-P和TP的平均去除率分别达60.5%、52.4%、68.4%、71.9%和74.0%。

5Under SE medium conditions,unicellular periphyton had significant absorption effect on nitrogen,nutrient the average removal rate for TN and NH_4~+-N could reach above 20%,while NO_3-N increased, and the phosphorus absorption rate was still low(＜10%).

5培养液条件下，颗粒态周丛藻类表现出显著的氮营养物吸收效果，TN和NH_4~+-N的平均去除率均可达20%以上，NO_3~--N略有增长，而对磷营养的吸收率仍较低(＜10%)。

During the experiments,filamentous periphyton growed well in sewages,and its biomass was increased signicantly with nitrogen and phosphorus removal rates.The maximum removals of NH_4~+-N,NO~(3-)-N,TN,PO_4~(3-)-P and TP were occurred as the Chla concentrations were 1.14,1.01,1.00,0.84,and 1.02 mg·g~(-1),respectively.

试验期间，丝状周丛藻类能很好地适应污水环境，其生物量和氮、磷去除率显著相关，NH_4~+-N、NO_3~--N、TN、PO_4~(3-)-P和TP的最高去除率分别出现在Chla浓度为1.14、1.01、1.00、0.84和1.02 mg·g~(-1)时。

Water quality indices such as TN, NH+4-N, NO-3-N, TP, DIP, DOP, PP were examined in both the head races and the offtakes during the two irrigation events.

分析了2次灌溉期的各引水渠和排水渠中总氮、氨氮（NH+4-N）、硝氮NO-3-N）、总磷、溶解性无机磷、溶解性有机磷、颗粒磷的变化情况。

Second,α,β-unsaturated nitriles were synthesized by three kinds of methods., all the reactions of N-methylhydroxylamine, O-methylhydroxylamine, N-benzylhydroxylamine and O-benzylhydroxylamine withα,β-unsaturated nitriles were carried out, under different temperatures and different solvents. But no desired products were found, though some catalysis were also added.

在不同温度、不同溶剂的条件下，用所合成的α，β-不饱和腈与N-甲基羟胺、N-苄基羟胺、O-甲基羟胺和O-苄基羟胺分别进行反应，没有得到期望的产物，尝试加入了一些催化剂，也没有得到产物。

In the space, along with increased distance from the main ore-controlling structures, the frequency of P type of pyrite and their thermoelectricity also decreased gradually. Within one lode, from the upper to the lower parts of an ore body, the vertical change of pyrite in thermoelectricity as the follows:① when the ore body is stable, that is when the ore body is uniformly and continuously mineralized, the Dp andαvalues keep increased from shallow to deeper parts;② when an ore body is discontinuously mineralized, the Dp andαvalues have a wavy increasing tendency from the shallow to the deeper;③ when the deeper part of an ore body contains abundant, Co and Ni high mafic dykes, the Dp andαvalues of pyrite decreased from the shallow to the deeper parts of an ore body, that is, an reversed zoning of pyrite thermoelectricity occurs for pyrite in this situation contain more Ni and Co and belongs to N type.④ For the deposits hosted in the Archean metamorphic rocks, because all of the pyrite in this case is N-type, the vertical change of pyrite is not featured by the transition of pyrite type, but by the increased values of Vnp and α from the shallow to deeper parts of an ore body.

在空间域上，水平分带规律为：随远离主干断裂，矿脉中P型的出现频率逐渐降低或热电系数值逐渐变小；在同一条矿脉中，这是由于矿化不均匀性及脉岩的影响，由矿体的上部到下部，它的垂向变化特征可以有如下几种变化形式：①由矿体的浅部到深部，黄铁矿的Dp值、或α值呈稳定升高的趋势时，矿体往往表现为矿化均匀，连续性好、延伸稳定；②由浅部到深部，黄铁矿的Dp值、α值呈波状变化，但总体又具有增大的趋势时，所在的矿体连续性差；③当矿脉的下部发育有大量的基性脉岩时，由于基性脉岩中常含有较高的Co、Ni，使其中黄铁矿的Co、Ni含量较高而呈N型导电，由矿体的上部到下部，黄铁矿的Dp值、α值呈减少的趋势，而造成黄铁矿热电性特征的逆向分带，④产于太古代变质岩中的中深脉状金矿，由于其中的黄铁矿均为N型导电，所以垂向变化规律并不表现为导型的改变，只是Vnp值或α值从矿体的上部到下部由小变大。

The objective standards of the EST risk assessment include pipe buried depth, frequency of going on a tour of inspection, amount of cars or trains to get by, thickness of the pipe or tank, occupied rate of the earth's surface on the pipe, depth of the corrosion pit, working time, soil resistively, MAOP, soil I〓, accident frequency, current velocity of river water, cutting down rate of the riverbed, fallback rate of the river bank, distance of the upper reservoir, criminal rate, attaining goal rate, reliability level, GDP, population amount, combustibility N〓, toxicity N〓, long-term danger RQ and so on.

专家评分法的客观性指标有管道埋深，巡线频率，日车辆通过数量，管道和罐的厚度，管道上方地面被占用率，腐蚀坑深度，服务年限，土壤电阻率，最大操作压力，土壤塑性指标I〓，事故频率，河水流速，河床下切率，河岸后退率，上游水库的距离，犯罪率，达标率，可靠度，国民生产总值，人口数量，易燃性N〓，毒性N〓，长期危险性RQ等。

The after-tax wage rate of those paying income tax will now be w n =(1- z)w, with consequent effects on labour supply t~n = e and consumer demands.

5付所得税的那些的税后的工资比率将现在是 w n =(1z)w，与在劳动上的结局的作用供应t ~ n = e并且消费者要求。

That is a magic square to n * n natural numbers line up every trip, every out, and each diagonal figures and hav...

幻方即1至n*n自然数排成的每行、每列、每条对角线数字之和均相等的方阵。这是一个流行的解法。

The traction ability of the driving wheel on simulant regolith is similar to but slightly better than that on quartz sand; when the slip ratio is 10%, the DPs on simulant regolith and on quartz sand are 36.8 N and 33.1 N respectively.

驱动轮在模拟月壤和石英砂上的牵引性能相似，前者略好于后者，当滑转率为10%时，挂钩牵引力分别为36.8 N和33.1 N。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失