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Soil microbial biomass and activities of invertase and urease all tended to decrease after pot-culture experiment, while the correlations between these biochemical properties and field ages were similar to those before this experiment, suggesting that rice cultivation without fertilization consumed part of soil microbial biomass, decreased soil enzyme activities correlated with C and N transformation, and affected soil nutrients status disadvantageously.

温室盆栽试验之后,水稻土的微生物生物量及酶活性与利用年限之间的关系规律和种植水稻之前基本一致,且整体上又趋于下降,即无施肥条件下种植水稻转化利用了土壤部分微生物生物量,并减弱了与碳氮转化相关酶的活性,对保持水稻土的营养水平造成不利影响。

The effects of molar ratio of linoleic acid and ethanol, temperature , and amount of ionic liquid on esterification reaction were studied and the optimal reaction conditions were obtained, that is, n :n = 4:1 , at refluence temperature, with the amount of ionic liquid equaling 42wt.

研究了环境友好的BF4离子液体催化亚油酸等高碳脂肪酸与无水乙醇酯化反应,考察了亚油酸与乙醇的摩尔比、反应温度、离子液体用量等条件对亚油酸酯化反应结果的影响,优化了反应的工艺条件。

Low pressure vacuum carburizing and high pressure gas quenching ,was adopted to ring gear of motors.

本文通过对轿车齿套的试验证明,采用低压真空渗碳+高压气淬的热处理方法,可得到较小的变形,且具有环保、节能、无表面内氧化、生产率高等优点。

Alginate is natural polysaccharide carbohydrate extracted from sea tangle, and alginate dressing is soft non-textile fiber refined from seaweed. It contains 85% natural alginate fiber and 15% sodium tvlose.

藻酸盐是由海带中提取的天然多糖碳水化合物,而藻酸盐敷料是从海藻中提炼的柔软无纺织纤维,它含有85%天然藻酸盐纤维,15%的羧甲基纤维素纳。

These results indicate that GDM can influence lipid and lipoprotein metabolism and lipid metabolism abnormalities can not be improved by diet restriction.Our data suggest that altered lipid profiles in women with GDM may result from unadapted proportion of carbohydrate and fat in the diet intake.We should monitor blood lipid and lipoprotein level while maintaining maternal blood glucose level.

GDM虽然病程短,仍然对血脂代谢存在一定影响,而且血糖控制后血脂并无改善,今后应注意对GDM患者限制碳水化合物的同时进行脂代谢的监测,合理调整饮食中脂肪含量可能将减少脂代谢异常,以减少GDM时妊高征的发生。

The invention provides a method for homopolymerizing conjugated dialkene or co-polymerizing conjugated dialkene and monovinyl aromatic hydrocarbon. The method comprises the following steps: the conjugated dialkene is homopolymerized or the conjugated dialkene and the monvinyl aromatic hydrocarbon are co-polymerized randomly. The method is characterized in that at least one alkali metal alkoxide compound expressed by the formula is used as a structure regulator; in the formula, R is linear chain or branched chain alkylidene radical having 1 to 10 carbon atoms; M is alkali metal selected from Li, Na, K, Rb and Cs.

本发明提供了一种使共轭二烯烃均聚或者使共轭二烯烃与单乙烯基芳烃共聚的方法,包括在阴离子聚合条件下使共轭二烯烃进行均聚或者使共轭二烯烃与单乙烯基芳烃进行无规共聚,其特征在于采用至少一种式所示的碱金属醇盐化合物作为结构调节剂,其中R为具有1-10碳原子的直链或支链亚烷基;以及M为选自Li、Na、K、Rb和Cs的碱金属。

The main compositions in Shaoxing yellow rice wine include ethanol, ester, aldehyde, acid, alkone, carbohydrate, protein, monose, polyose, peptide, amino acid, polyphenol, Vitamin B, and inorganic elements etc.

绍兴酒的主要成分有醇、酯、醛、酸、酮、碳水化合物、蛋白质、单糖、多糖、肽、氨基酸、多酚以及含量丰富的B族维生素、无机元素等10多个类别几百种。色泽、透明度、澄清状况及有无沉淀物是对她的综合评定。

DSC measurements proved that the amorphous and crystalline prepolymerswere obtained catalyzed by stannous octoate and sulfric acid respectively.

DSC的分析表明以Sn2和浓硫酸为催化剂可以分别制备无定形的与结晶的聚乳酸/碳纳米管复合物。

Of 685 meteorites published in the Meteoritical Bulletin Database,there are 2 martian meteorites,2 eucrites,6 ureilites,5 mesosiderites,1 pallasite,1 iron,and 10 carbonaceous chondrites.

在正式公布的684块已分类陨石中,鉴定出2块火星陨石、2块灶神星陨石、6块橄辉无球粒陨石、5块中铁陨石、1块橄榄陨铁、1块铁陨石以及10块碳质球粒陨石等特殊样品,并对其中的部分样品开展了深入的研究。

There is no significant difference between the result of flow injection analysis method and spectrophotography in the determination of Chromium in drinking water, it is worthy of recommendation.

在一定的条件下,应用流动注射法测定水中六价铬与用二苯碳酰二肼分光光度法得到的结果差异无统计学意义,是可以推荐的方法。

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推荐网络例句

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊!不用提了。提到肉,真是糟透了。

Tristan, I have nowhere to send this letter and no reason to believe you wish to receive it.

Tristan ,我不知道把这信寄到哪里,也不知道你是否想收到它。