查询词典 condensation

When dry distillation of distillates by condensation, the liquid product of clarification, it is submerged in the lower pine root oil, pine root oil and then use the same method can be obtained for further processing pine tar.

干馏时的馏出物经冷凝后，液体产物澄清时，沉在下层的是松根油，再将松根油用同样方法进一步加工可制得松焦油。

Methods Benzhydrylpiperazine was synthesized by condensation of chlorodiphenylmethane and anhydrous piperazine in absolute ethanol.

以二苯甲基氯和无水哌嗪为原料，无水乙醇做溶剂，两者经缩合制得二苯甲基哌嗪。

Some new α,β-unsaturated sulfones were prepared by condensation of 4-nitrophenylsulfonylacetates with aromatic aldehydes in cyclohexane/CH_3CH_2OH in the presence of catalytic amounts of piperidine.

不饱和砜是以对硝基苯磺酰基乙酸酯为原料与芳香醛在六氢吡啶醋酸盐催化下发生缩合反应制得的。

A series of Sn/C composites was prepared by thermal condensation of coal tar pitch and tributyltin chloride with different proportions.

以煤焦油沥青为碳源、三丁基氯化锡为锡源，采用压力下聚合手段原位合成出Sn/C复合材料，并对它的电化学性能进行了研究。

The results of GPC show that there are two different reaction mechanisms,linear condensation and cyclic reaction in the synthesis process,and the molecular weightreaches 1.17×105 and P d is 1.33.The DSC curves show that supercritical carbon dioxide can plasticize PC so that the T g of PC decreased.

凝胶渗透色谱测试表明，合成过程中存在线形缩聚和成环两种不同的反应机理，产物的重均分子量高达117740，分子量分布指数 P d=1.33；差示扫描量热法测试表明，超临界CO2能增塑PC致使其玻璃化转变温度降低。

Since condensation can play havoc with an all-electronic camera, you want even greater protection for them.

把它放在凉爽的窗台上或不热的走廊内几个小时，让它慢慢升到室内温度。

Then the optimal conditions were decided as follows: the ratio of wall-material to core-material should be 8.0 to 2.0, with ployacrylic sodium as dispersing emulsifier, NH4Cl as acid catalyst, and with the time of pouring catalyst being 2 h, the pH value at end point 2.0, the temperature of condensation reaction under control about 70℃, the reaction time 3 h, the stirring speed 1000 r/min.

研究了壁材与芯材的比例、分散乳化剂、催化剂、反应温度和搅拌速度5因素对微胶囊产品的影响，得出最优化的工艺为：壁材与芯材的比例为m：m=8.0：2.0，以聚丙烯酸钠为分散乳化剂，氯化铵为酸性催化剂，加入速度以2 h加完，终点pH值为2.0，缩聚反应温度控制在70℃左右，反应时间为3 h，搅拌速度为1000 r/min。

We have also studied the hydrodynamics of the nuclear matter with spontaneous chiral symmetry breaking based on the Poisson bracket method. The effects of mass are included and the full hydrodynamic equation of pion is given. The possibility of the phase transition to pion condensation is also discussed.

在研究具有手征对称性自发破缺的核物质系统的流体动力学时，我们运用Poisson括号方法，建立了pion介子的完整的流体动力学方程，给出了色散关系并讨论了相变和pion凝聚的可能性。

Road marking paints made from gum rosin,high molecular polymer,unsaturated dibasic acid and polyalcohol by condensation and esterification,then heat-stabilizer and light-stabilizer are added in.

道路标线涂料专用树脂是由松香、高分子聚合物、不饱和二元酸及多元醇经缩聚、酯化后加入热稳定剂、光稳定剂后制成的不规则半圆粒状或片状产品。

It may be helpful in cold ambient conditions to avoid the risk of condensation and possible resultant porosity.

在寒冷的环境下为了预防冷凝和产生多孔的焊缝，使用预热可能会有一定帮助。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。