查询词典 polyhydric alcohol

The actinic radiation-curable and cationically polymerizable organic substance is at least one glycidylether of a polyhydric aliphatic, alicyclic or aromatic alcohol having at least three epoxy groups with epoxy equivalent weight between 90 and 800 grams per equivalent, at least one solid or liquid alicyclic epoxide with an epoxy equivalent weight between 90 and 330 grams per equivalent having at least two epoxy groups and monomer purity greater than about 90 % by weight, or at least a solid or liquid epoxycresol novolac or epoxyphenol novolac having epoxy equivalent weight between 130 and 350, or mixtures thereof.

可光化辐射固化并可阳离子聚合的有机物质为至少一种带有至少3个环氧基团环氧当量为90―800克每当量的脂族、脂环族或芳族多元醇的缩水甘油醚，至少一种环氧当量为80―330克每当量带有至少两个环氧基团且单体纯度大于约90wt％的固态或液态脂环环氧化物，或至少一种环氧当量为130―350的固态或液态环氧甲酚线性酚醛清漆或环氧苯酚线性酚醛清漆，或其混合物。

The trifunctional polyhydric alcohol is more, the elasticity coefficient and surface hardness are higher. 2. Catalyst. The appropriate dosage of catalyst is determinated. To N-330, it is 0.15%; to N-220, it is 0.35%. 3. Filler. The more the solid filler is, the higher the properties of polyurethane elastomer are. The effect of liquid filler is more perplexing.

结果表明：三官能度聚醚含量增加，试样的弹性系数和表面硬度随之增大；固体填料含量增加，试样的弹性系数和表面硬度随之增大，液体填料的影响较为复杂；催化剂辛酸亚锡的合适用量为0.15%(N-330)或0.35%(N-220)。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐