醚的

Cells in the induction group were treated with L-DMEM consisting of 10% fetal calf serum and 10 μg/L basic fibroblast growth factor for 24 hours, then induced with L-DMEM consisting of 2% dimethyl sulphoxide and 200 μmol/L butyl hydroxy anisol for 1, 3 and 5 hours.

设立2组，诱导组用含10%胎牛血清和10 μg/L成纤维生长因子的L-DMEM培养基预诱导24 h后，再以含2%二甲基亚砜和200 μmol/L丁羟基茴香醚的L-DMEM无血清培养基诱导1，3，5 h。

The third section: The novel method for synthesizing unsymmetrical sulfides was proposed.

第三部分研究内容：首次提出了不对称硫醚的新的合成方法。

The chemical components of volatile oil from Foemiculum Vulgare Mill were determined by GC-MS.

用GC－MS方法测定了小茴香挥发油的全组分，其中对-丙烯基茴香醚的含量为82.65%。

One subject of the present work relates to a green chemistry synthesis of tetrabromobisphenol A wherein the combination of sodium bromide and sodium bromated as brominating agent which completely replaces conventional liquid bromine.

据文献报道，该产品在某些阻燃材料中将是十溴二苯醚的理想替代品之一，目前，仅有国外公司在销售该种产品，我国还没有实现真正的工业化生产，所以研制开发溴化环氧树脂阻燃剂具有重要意义，本文研究工作主要包括三方面的内容。

METHODS AND RESULTS: In the present report, we describe the physical and anesthetic properties of 31 cyclic ethers halogenated solely with fluorine.

方法和结果：在近期的道中，我们阐述了31环单氟化醚的理化和麻醉特性。

Under the optimal conditions, the conversion of benzyl chloride is nearly 100% during esterification, and the total yield of benzyl alcohol is higher than 98%, the percent of benzyl ether is lower than 2%.

氯化苄在酯化反应中基本反应完全，苯甲醇的两步总选择性可以达到98%以上，二苄醚的含量低于2%。

The biodegradation , ecotoxic effects and environmental behaviors were introduced.

介绍了烷基酚聚氧乙烯醚的生物降解性、生态毒性效应及其环境行为等，并指出必须加大替代品的研究和开发力度。

Preparation, properties of cellulose ethers, and their applications in daily chemical industry were introduced.

介绍了纤维素醚的种类、制备方法、性能特点及其在日用化学工业中的应用。

The high cost of vinyl ethers prohibits considering these materials for many areas.

乙烯醚的昂贵价格限制了它在许多领域的应用。

The synthesis method of calixcrown ethers was simplified and improved, and 10 Lscale synthesis was carried out.

对杯芳烃冠醚的合成工艺进行了简化和改进，并进行了10L规模的中间放大合成。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。