醚的

In this paper, methods of "physic blending" and "polymerizing in situ" were employed to synthesize CdS/PU hybrid nanocomposites.

本文分别采用&物理共混&和&原位聚合&两种方法合成了聚氨酯基CdS纳米杂化材料，并采用&接枝到表面&的方法实现了功能化聚醚分子链与CdS纳米晶的组装。

Influences of hydrogen sulfide, element sulfide, mercaptan, sulphuring ether, disulfide individually on silver strip corrosion of jet fuel, and of element sulphur coexisting with other sulfide on silver strip corrosion of jet fuel were studied.

考察了硫化氢、元素硫、硫醇、硫醚、多硫化物等单独存在时对喷气燃料银片腐蚀的影响；同时研究了元素硫与其它硫化物以不同浓度混合时对喷气燃料银片腐蚀的影响。

Light-coloured varnishes were prepared by etherification of urushiol-formaldehyde condensates with epichlorohydrin. They gave clear paint films in pale colour. The varnishes blended well with various pigments and exhibited excellent properties similar to those of the original Chinese lacquer -"the monarch of the coating". No vesicating action on human body was observed.

用环氧氯丙烷醚化方法成功地制备的浅色生漆，涂膜透明，颜色浅，能和多种颜料很好调合，充分发挥其色彩，保持了&涂料之王&—生漆的基本优点；在漆器上应用，施工方便，效果良好，对人体无过敏反应。

The cationic photopolymerization of tetrahydrofuran was carried out initiated by diphenyliodonium hexafluoroarsenate induced with ultraviolet and sensitized with dimethoxybenzoin and acridine yellow separately.

四氢呋喃的均聚物聚四氢呋喃是生产聚醚型聚氨酯和聚酯弹性体的重要原料，它是由THF通过正离子开环聚合反应制备而成。

Extent of etherbond cleavage becomes more and more intensive with higher alkaline concentration, higher reaction temperature, longer reaction time, stronger activity of nucleophilic reagent, and these substituted aryl ethers will become more and more unstable.

碱浓度越高，反应温度越高，反应时间越长，亲核试剂的活性越强，醚键断裂的程度越大，这类化合物就越不稳定。

Polar perfluoropolyether lubricant film has been fabricated on single crystal silicon by dip coating technique. The contact angles of distilled water droplet on the single crystal surface and the lubricant film surface were measured with a contact angle meter and the chemical states of C of the film determined with an X ray photoelectron spectrometer.

利用浸涂技术在单晶硅基片上成功地制备出极性全氟聚醚润滑膜，在DF－PM型动－静摩控系数精密测定装置上考察了润滑膜的摩擦特性，并采用接触角测定仪和X射线光电子能谱仪对润滑膜的表面性质和化学状态进行了表征。

In order to solve the problem of Botryosphaeria dothidea on resistance to traditional fungicides, bio-assay tests were made for 6 fungicides including 10% water-dispersible granules of difenoconazole, 250 gL^(-1) azoxystrobin suspension concentrate etc. against B. dothidea in laboratory. Field tests of these fungicides with different concentrations were made for control of the disease on apple trees.

为解决当前苹果轮纹病对传统药剂产生抗性问题，以70%代森锰锌可湿性粉剂为对照，在室内测试了10%苯醚甲环唑水分散粒剂，250gL^(-1)嘧菌酯悬浮剂等6种化学杀菌剂的室内毒力；另外在田间设置小区试验，测定了这些药剂在不同使用质量浓度条件下对苹果轮纹病的防治效果。

Castor seeds were degreased with 3 kinds of solvents including petroleum ether, aether and methylene chloride, and ricins were extracted from the defatted castor cake with acetic acid solution. And the rat-killing activities of 3 kinds of ricins were compared in the rat-killing activity test.

方法］用石油醚、乙醚、二氯甲烷3种溶剂分别对蓖麻粗籽进行脱脂后，用醋酸水溶液从脱脂的蓖麻饼中提取蓖麻毒蛋白，通过杀鼠活性试验比较3种蓖麻粗毒蛋白的杀鼠活性。

Castor seeds were degreased with 3 kinds of solvents including petroleum ether,aether and methylene chloride,and ricins were extracted from the defatted castor cake with acetic acid solution.

方法用石油醚、乙醚、二氯甲烷3种溶剂分别对蓖麻粗籽进行脱脂后，用醋酸水溶液从脱脂的蓖麻饼中提取蓖麻毒蛋白，通过杀鼠活性试验比较3种蓖麻粗毒蛋白的杀鼠活性。

The influence of PO and EO chain link number of block polyether on permeability of potassium phosphate is minor to initiative structure.

嵌段聚醚链中PO、EO链节数对渗透性的影响较起始剂结构变化产生的影响小。

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。