in presence of

Hydrogen production from peat in supercritical water in presence of calcium oxide

超临界水中氧化钙催化泥炭制氢

The sample is dissolved with mixed acid including sulphuric acid so that the lead matrix is separated as precipitate, and the germanium in clear solution is directly determined in presence of EDTA ascorbic acid as masking agent. The lower limit of determination is 0.002 μ g mL.

在试样溶解过程中分离主体铅并采用EDTA-抗坏血酸掩蔽干扰离子。拟定了不经分离直接测定方铅矿中微量锗的方法，0.02&0.4μg/mL锗范围内线性关系良好。

The ferrofluid can be magnetized to the saturated state in presence of an external magnetic field.

磁流体在外加磁场的作用下能够被磁化到饱和状态.

This paper deals with the problems of the optimal control of the airplane landing in presence of atmospheric turbulence with application of the theory and me-thods of random optimal control.

论述了应用随机最优控制理论的基本原理和方法，解决飞机在大气紊流中着陆的控制问题。

The article introduced a novel synthesis method of acetylacetone iron which was synthesized by acetylacetone and Fe 2O 3 in presence of catalyst.

介绍了用乙酰丙酮和三氧化二铁在催化剂的存在下合成乙酰丙酮铁的一种新方法。

Don't use tool in presence of flam marble and explosive materials.

不要在易燃、易爆的地方使用工具.

Study of Olefin Separation by Complexation-method in Presence of Macromolecular Polymer

大环高分子化合物存在下烯烃的络合分离研究

SCR mechanism of NO_x with NH_3 in presence of steam on MnO_2/ NaY catalyst was similar to diazotization.

水蒸气存在条件下，MnO2/NaY催化剂上NH3选择催化还原NOx的反应机理类似于重氮化反应机理。

The PMA solution was prepared by free radical polymerization with maleic anhydride acting as monomer in presence of peroxide.

本研究选用马来酸酐为单体，以过氧化物为引发剂，通过自由基聚合的方式合成制备聚马来酸（PMA）水溶液。

Traces of sulfate ions in etching solution for aluminum foil have been determined by turbidimetry in presence of cation surface activator-hexadecyl trimethyl ammonium bromide ( CTMAB).

在阳离子表面活性剂&十六烷基三甲基溴化铵（CTMAB）的存在下，用比浊法对铝箔蚀腐液中微量硫酸根离子进行测定。

The presence of a star is already apparent in the early film.

在早期影片中已经显露出了明星相。

The test can identify the presence of abnormalities in the unborn child.

这项化验能鉴定胎儿是否有不正常现象。

Study on Nitration of Hexamethylenetetramine and Toluene in Presence of Br(?) nsted Acidic Ionic Liquids

Br（？）nsted酸性离子液体存在下乌洛托品和甲苯的硝化反应研究

A single equilibrium model of spot market in absence of future market and general equilibrium model between spot and future markets in presence of future market are derived.

本研究构建了不存在期货交易的现货市场单均衡模型和存在期货交易的期货市场、现货市场一般均衡模型。

Orthogonal experimental research on catalytic upgrading of cat cracked gasoline in presence of compounded catalyst

复合催化剂上催化裂化汽油催化改质的正交实验研究

Anionic monofunctional polymerization and difunctional Polymerization of HFPO with perfluorinated acyl fluoride in presence of potassium fluoride have been studied.

研究了氟化钾催化下全氟环氧丙烷的自聚以及与全氟戊（或己）二酰氟的双官能团阴离子聚合。

Corrosivity Corrosive in presence of copper.

腐蚀性对于铜会产生腐蚀性.

1,4-Naphthoquinone is synthesized by oxidation using naphthalene as raw material, cerous sulfate as oxidant in presence of sulfuric acid, and with 140# solvent naphtha as solvent. Reduced cerous sulfate can be regenerated by electrolysis and reused in reaction repeatedly.

用萘为原料，硫酸铈为氧化剂，140溶剂油为溶剂，在硫酸存在下氧化合成1,4萘醌，氧化剂硫酸铈被还原后，通过电解再生，循环使用。

Caroline hardly dared talk in Alex's presence, she was so in awe of him.

卡罗琳在亚历克斯面前几乎不敢说话，她对他很是敬畏。

Preparation of 4-Amino-2,2,6,6-Tetramethyl-4-Piperidine in Presence of Catalyst

催化合成2,2,6,6-四甲基-4-氨基哌啶

Force Control for Tracking a Set of Tasks in Presence of Constraints

有环境约束时完成一族跟踪任务的力控制

Results Compared with natural delivery, in presence of assisted breech delivery, breech extraction, application of vacuum extractor, and cesarean section, the incidence rate of neonatal asphyxia increased significantly ( P < 0.01).

结果①臀位助产、臀位牵引、胎头吸引术、剖宫产术的新生儿窒息率经统计学处理明显高于自然分娩率（P<0.01）；

He felt rather awkward in presence of ladies.

他在女士面前有些窘.

Its performances are same as CA-CFAR detector without interfering targets, however, in presence of interfering targets, are obviously superior to simple threshold CA-CFAR detector.

当有干扰目标时，它的性能将明显优于单门限CA&CFAR检测器。

Method for measuring trace gold with X-ray fluorescence after pre-enrichment is presented. The gold is enriched in a medium of 10% aqua regia in presence of Br 2 with polyurethane foam loaded with diphenylthiourea and methyl isobutyl ketone.

报道了在10%王水介质中，有Br2存在时用二苯基硫脲&甲基异丁酮泡沫塑料富集、X射线荧光测定痕量金的分析方法。

Glycosides are metabolized into aglycons in presence of intestinal bacteria before they are absorbed.

苷类中药生物利用度低,摄入后需经肠道细菌代谢成苷元而发挥其药理作用.

Litmus paper turns red in the presence of an acid.

石蕊试纸遇到酸就变红。

Risk Factors for Ventilator-associated Pneumonia by Pseudomonas aeruginosa in Presence of Recent Antibiotic Exposure.

近期抗生素暴露患者由绿脓杆菌和假单胞菌性产生的与机械通气相关肺炎的危险因素.

Effects Study on Thermal Stabilization of Transglutaminase in Presence of Saccharides by TG/ DSC Method

采用TG和DSC方法研究糖类对谷氨酰胺转胺酶热稳定性的影响

Vitamin C is a good marker for the presence of other vitamins and nutrients in frozen food.

维生素C的存在是冷冻食品里存在其他维生素和营养成分的很好说明。