查询词典 in sb.'s presence

This step produces a thiol ester. In the next step, methanolysis of the thiol ester is carried out in the presence of a basic catalyst.

该步骤产生硫羟酸酯，在下一步中，在碱性催化剂存在下进行硫羟酸酯的甲醇解。

The fluorescence emission peak of inclusion complex shifted toward short waves and fluorescence intensities decreased in the presence of DNA. The quenching constant was calculated to be 6.12×10~4L mol~(-1) by Stern-Volmer method. The quenching mechanism was studied. The interaction ofβ-CD-TH inclusion complex and thionine with DNA were compared.

荧光光谱实验的结果是DNA对硫堇包合物的荧光峰有蓝移和猝灭效应，猝灭常数Ksv为6.12×10~4L mol~(-1)；探讨了其荧光猝灭机理，比较了硫堇包合物和游离态硫堇与DNA作用程度的大小。

Using triethanolamine and thionyl chloride as raw materials,tri-(3-chloroethane)amine is synthesized by substitution reaction in the presence of solvent chloroform.

以三乙醇胺和氯化亚砜为主要原料，通过取代反应合成三(2-氯乙基)胺，再在氮气的保护下，经过与对羟基苯甲醛反应，生成三胺，探讨了合成反应的工艺条件。

Two different Raman reporter molecules (4,4'-bipyridine and thiophenol), which served as respective labels for each type of antibodies, were selected, SERS has the advantage of a small line width of Raman bands and high sensibility. The presence of dual-analyte was established by distinguishing the corresponding labeled reporter's Raman spectrum.

采用不同标记分子苯硫酚和4，4'-联吡啶(4，4-Bipyridin)分别标记不同的免疫金溶胶，利用表面增强拉曼光谱谱峰较窄且具有较强的分辨率及高灵敏度的特点，通过对两种标记分子特征谱峰的判断识别所加入的两种抗原。

Extensive experimentation revealed several issues, along with several corresponding solutions:(1) given that lithium metal dissolves slowly in liquid ammonia, considerable time was required to generate the dissolved metal solution (ca. 1 h);(2) the t -BuOH must be freshly distilled prior to use 21 to diminish the formation of ketone 19 (Figure 2);(3) efficient capture of the lithium enolate ( 11 ) required the use of freshly distilled TMSCl and Et 3 N; and (4) the presence of residual thiophenol upon workup was found to inhibit the subsequent Sc 3 -promoted hydroxymethylation.

大量实验揭示若干问题，随着几个对策 1鉴于锂金属溶化慢慢液氨、需要相当多的时间创造了金属溶液溶解(约占1小时)；(2) T恤使操作必须事先用新鲜蒸馏水形成酮减少2119(图2)；有效捕获的锂烯醇(11)使用新鲜蒸馏水需氯和ET三氮；含有残余硫workup经发现抑制随后推选3-羟甲晋升。

CH3OH could attack the phosphor atom in 1,3,2-dioxaphopholane of compiound (1) to give O-methyl O-hydroxyethyl-O-phthalimidoethyl thiophosphate in 85% yield; in the presence of potassium hydroxide aryl selenol could attack the carbon atom in 1,3,2-diox-aphopholane of the cyclic phospholipid conjugate of N^1-(2-furanidyl)-N^3--5-fluorouracil to give the corresponding product of ring-opening in high yields.

在室温下，以异丙醇作溶剂，苯硒酚与化合物2不反应。在氢氧化钾存在下，以异丙醇／水作溶剂（体积比20：1，在室温下，硒酚可以有效地进攻中化合物2中1，3，2-二氧磷杂环戊烷中的碳原子生成相应的开环产物。按照这一反应条件，顺利实现了硒酚对N^1-（2-呋喃基）-N^3-羟烷基-5-氟脲嘧啶硫代环甘油磷脂缀合物的亲核开环，生成甘油骨架的端碳原子上带有芳硒基新颖的磷脂核苷缀合物。

Sensitive polarographic waves which relate to thiouracil, 6-mercaptopurine and homocystine(in sodium citric acid buffer solution) appeared in the presence of Cu.

高胱氨酸、6－巯基嘌呤和硫尿嘧啶均能与铜离子作用而在汞电极上产生两个吸附波。在柠檬酸钠溶液中，高胱氨酸与铜的络合物在－0.06v

E.g. His presence is a thorn in the host's flesh.

他的出席使主人觉得如芒在背。

Mr. Audley was clearing his throat preparatory to bidding his beautiful companion good morning, and making his escape from the thraldom of her presence into the lonely meadow outside the churchyard, when Clara Talboys arrested him by speaking upon that very subject which he was most anxious to avoid.

奥德利先生正在清清嗓子，准备跟他那美丽同伴告别，从她那面对面的束缚下逃到墓园外寂寞的牧场上去，这时候，克莱拉·托尔博伊斯抓住了他，跟他谈起了他最最急于要回避的问题。

Low frequency sound waves (around 19 Hertz), which are below the threshold of hearing, have also been shown to precipitate a feeling of presence and the perception of shadowy images in the periphery of vision.

低频声波（约19赫兹）人耳听不到，但是也被证实可以让人产生一种有东西存在的感觉，并且在视力边缘感觉到有阴影。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。