产下

All experiments were carried out under the dry and oxygen-free argon atmosphere by using standard Schlenk techniques.

在无水无氧和纯的氩气保护下，使用Schlenk技术，用2-(C1CH2) C5H4N·HC1与2当量的C9H7Li在THF中冰水浴反应，以73%的产率得到3-(2-C5H4NCH2)C9H7(1)。

Some existing conditions can increase the risk of stillbirth, but treatment may be available to reduce that risk in many cases.

一些现有的条件可以增加死产的风险，但治疗可提供，以减少这种风险，在许多情况下。

The effects of the bio-active compound produced by Streptomyces 702 on the cold storage of cooked meat were studied.

研究了冷藏条件下经链霉菌702所产生物活性物质处理的熟肉制品的保藏效果。

The predicted value of the vitamin E succinate yield was 99.27%.

脂肪酶的催化下反应71 h，维生素E琥珀酸酯产率达到98.71%。

Two kinds of sulfonium salt s as photo-acid generator possess high thermo-decomposition temperature and good solubility in some organic solvents.

对合成的两种新型锍鎓盐光生酸剂进行了基本物性考察，表明它们有较高的热分解温度和在常用有机溶剂中有较好的溶解性，并考察了其在405、365nm 下乙腈中的分解及产酸性能。

The maximum yield of Summerwood bio-oil was 63.8%,which was achieved at 500℃ and feed rate 20.14kg/h with a particle size 0.47~0.67mm.

其中，楸木木屑在反应温度为500℃、粒径为0.47～0.67mm、给料速率为20.14kg/h的条件下产油率达到最高值。

By the liquid-state fermentation, the best factors for cellulase from C. thermophile were investigated. The factors including carbon sources, nitrogen sources, the original pH of medium and varieties of pH and the protein concentration during the cultural process were tested .

采用液体发酵培养法，通过对碳源、氮源、培养时间、液体培养基的起始pH值及产酶过程中培养液中pH值和蛋白质含量变化的研究发现：在以2％纤维素、1％可溶性淀粉为碳源，2.0％KNO_3+0.2％酵母为氮源，液体培养基的起始pH值为6.5，50℃下液体发酵培养8d～9d后，各种酶活力最高。

Discuss the method of synthasizing the polybasic hydroxyethoxy benzene by thereaction of polybasic phenol with 2-chloroethanol in the ethanol solvent under the conditionof phase transter catalyst, which raises the product yield and shortens the reaction time.

以多元酚为原料，乙醇做溶剂，在相转移催化剂条件下与氯乙醇作用，合成多元羟乙氧基苯的方法，提高了产品产率，缩短了反应时间。

The type, initial feeding time and concentration of precursor for HV unit formation had great effects on PHBV production in shake flasks. Propionate was selected as the better precursor for HV fraction than valerate after comprehensive survey of these two precursors. The suitable PHBV shaking-flask culture conditions were obtained through the analysis of PHBV fermentation process, the investigation of several factors by using RSA method and the fed-batch experiments. Cell dry weight, PHBV content, PHBV concentration, HV fraction and yield coefficient of HV unit to propionate were 27. 7g/L, 80.7%, 22. 4g/L, 16. 1mol% and 0.50g/g, respectively.

在共聚物PHBV的摇瓶发酵过程中，PHBV中HV组分形成的前体物质的种类、初始加入时间以及加入量是影响PHBV发酵过程的重要因素；在综合比较丙酸和戊酸这两种前体的基础上，选择丙酸作为HV组分合成前体较适宜；通过对PHBV发酵过程曲线分析、影响PHBV发酵指标的各因素的响应面分析以及摇瓶发酵补料试验，得到了较适宜的PHBV摇瓶发酵补料条件，在此条件下，细胞干重、PHBV含量、PHBV浓度、HV组分含量和HV组分对丙酸的产率系数可分别达到27.7g/L、80.7％、22.4g/L、16.1mo1％和

The skarn type vesuvianite, occurred in Huilong region,Tongbai,Henan Province is considered to be an aggregate of skarn minerals,based upon the identification under the microscope and analysis by energy spectrum,spectrometry and electron microprobe.

钟华邦，矽卡岩型符山石玉──回龙玉石矿的发现及玉石特征产于河南桐柏回龙地区的矽卡岩型符山石玉，通过镜下鉴定，能谱、光谱、电探测试分析，认为回龙玉是由多种矽卡岩矿物集合体组成的岩石。

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。