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900字范文 > 干湿交替周期浸泡法 the alternation of wetting-dry sulfate corrosion英语短句 例句大全

干湿交替周期浸泡法 the alternation of wetting-dry sulfate corrosion英语短句 例句大全

时间:2021-09-17 11:09:22

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干湿交替周期浸泡法 the alternation of wetting-dry sulfate corrosion英语短句 例句大全

干湿交替周期浸泡法,the alternation of wetting-dry sulfate corrosion

1)the alternation of wetting-dry sulfate corrosion干湿交替周期浸泡法

2)cyclical immersion method周期浸泡法

3)cyclic wet-dry immersion test干湿周浸

英文短句/例句

1.The Corrosion Behavior of Aluminum Alloy 7A04 under Cyclic Wet-Dry Immersion Conditions铝合金7A04在干湿周浸条件下的腐蚀行为研究(英文)

bined Cyclic Corrosion Tester盐水、干燥、加湿、浸渍复合腐蚀试验机

3.The act of wetting or becoming wet through and through.浸湿或浸透的行为.

4.(Scandinavian) dried cod soaked in a lye solution before boiling to give it a gelatinous consistency.(斯堪的那维亚)干鳕鱼蒸前在碱溶液中浸湿,使之成为凝胶状。

5.Brangwen went about at his work, heavy, his heart heavy as the sodden earth.布兰温忙着干活,心情宛如浸湿的土地一样十分沉重。

6.He soused a dog in the pond.他把狗投在池里浸湿。

7.In summer, they swell wood with water.夏天,他们把木材浸湿。

8.He peeled off his blood-soaked shirt.他褪掉了血浸湿的衬衫。

9.Tears washed the child"s cheeks.眼泪浸湿了小孩的脸颊

10.The rain permeate the grind swiftly.雨水很快地浸湿了地面。

11.Purging a fog, the air is a saturated with mositure.下雾时空气被湿气浸透。

12.wet from being plunged into liquid.由于浸于液体中而湿的。

13.During the budding time,keep the soil wetness but not over,how ml should it need is based on the soil-dryness or wetness;keep ventilation.在种子发芽周期里需保持盆土湿润,不宜过湿,视土干湿而定浇水量;保持通风,通气。

14.To drench thoroughly or cover with or as if with a liquid.浸没彻底浸湿或用或类似用液体盖没

15.be or become thoroughly soaked or saturated with a liquid.用液体彻底地浸透或者浸湿。

16.To plunge briefly into a liquid, as in order to wet, coat, or saturate.浸短暂地插入液体,以弄湿、涂层或浸透

17.a hygrometer consisting of a dry-bulb and a wet-bulb thermometer; their difference indicates the dryness of the surrounding air.由干球和湿球温度计组成的湿度计;它们的区别显示出周围空气的干燥程度。

18.Li"s old flannel overcoat, which had undergone a soaking and baking dry, the two disasters of water and fire, was limp, puffed, and in addition "paralyzed."他的旧法兰绒外套经过浸湿烤干这两重水深火热的痛苦,疲软肥肿,又添上风瘫病;

相关短句/例句

cyclical immersion method周期浸泡法

3)cyclic wet-dry immersion test干湿周浸

4)circle soaking周期浸泡

5)wetting-redrying干湿交替

1.Effect of continuous submerging andwetting-redrying on cadmium speciation and uptake by Sorghum hybrid Sudangrass in a Ferric-accumulic Stagnic Anthrosol and a Tipical Hapludult collected from the Taihu Lake region and the rolling downs of Yingtan,Jiangxi,China respectively,was studied by pot experiment with Cd spike in .采用盆栽试验的方法,研究了前期持续淹水和干湿交替预培养对2种水稻土———太湖地区黄泥土、江西鹰潭红壤性水稻土中外源Cd形态分配及高丹草吸收Cd的影响。

6)dry-wet circulation干湿交替

1.Study on corrosion effects under sulfate attack of concrete at adry-wet circulation environment;干湿交替环境下混凝土硫酸盐侵蚀的试验研究

2.Sulfate attack is a very important effect to the concrete durability,however,the environment of concrete is not only sulfate attack,in fact,the concrete sometimes gets two factors of external environment and sulfate attack,such asdry-wet circulation etc.硫酸盐侵蚀对混凝土的耐久性有重要影响,但在实际工程中混凝土往往不是处于硫酸盐单一的作用环境中,混凝土往往受到外界环境条件和硫酸盐侵蚀双重因素的作用,如干湿交替等。

3.Based on the situation of the concrete sulfate attack always exists in complex factors,the present research of the concrete sulfate attack is elaborated at adry-wet circulation and carbonation environment,and experiments are used to prove that thedry-wet circulation and carbonation can accelerate the sulfate attack,some ideas for the future research are provided.依据现实情况中混凝土硫酸盐侵蚀往往是在多因素的作用下,阐述了国内外对于环境因素中的干湿交替和碳化对混凝土硫酸盐侵蚀的研究现状,并通过试验证明了干湿循环和碳化对混凝土硫酸盐侵蚀的加速作用,为以后的研究提供一些参考。

延伸阅读

周期图法一种信号功率谱密度估计方法。它的特点是:为得到功率谱估值,先取信号序列的离散傅里叶变换,然后取其幅频特性的平方并除以序列长度N,即 (1)(2)由于序列x(n)的离散傅里叶变换X()具有周期性,因而这种功率谱也具有周期性,常称为周期图。早期的统计学者曾利用这种方法从大量的数据中寻找隐藏的周期性的规律。周期图是信号功率谱的一个有偏估值;而且,当信号序列的长度增大到无穷时,估值的方差不趋于零。因此,随着所取的信号序列长度的不同,所得到的周期图也不同,这种现象称为随机起伏。由于随机起伏大,使用周期图不能得到比较稳定的估值。一些学者对此作了改进。为了减小随机起伏,M.S.巴特利特提出平均周期图法,即先把信号序列分为若干段,对每段分别计算其周期图,然后取各个周期图的平均作为功率谱的估值。平均周期图可以减小随机起伏,但是,如果信号序列不是足够长,由于每段序列长度变短,功率谱估值对不同频率成分的分辨能力也随之下降。另一种改进方法是将周期图与一个适当的频域窗函数相褶积,从而对周期图产生平滑作用,以减小随机起伏。加窗处理的结果虽然可以使随机起伏减小,但也会使周期图的分辨能力下降。P.O.韦尔奇提出一种把加窗处理与平均处理结合起来的方法。先把分段的数据乘以窗函数(进行加窗处理),分别计算其周期图,然后进行平均。韦尔奇方法是较常用的一种计算方法。为了得到较好的功率谱估值,加窗和平均处理均应兼顾减小随机起伏和保证有足够的谱分辨率两个方面。周期图法的优点是能应用离散傅里叶变换的快速算法来进行估值。对利用式(1)、(2)得到的功率谱估值进行傅里叶反变换,可以得到信号的自相关函数估值。这种方法适用于长信号序列的情况,在有足够的序列长度时,应用改进的周期图法,可以得到较好的功率谱估值,因而应用很广。参考书目A.V.Oppenheim andR.W.Schafer,Digital SignalProcessing,Prentice-Hall,Inc.,Englewood Cliffs,New Jersey,1975.

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