甲醛

SF-2 boundary lubricated bearings increase:Acid poly A with formaldehyde, with high wear resistance, bearing surface arrangement of the law must be fitted with a storage pit filled with grease, especially for high load low speed of rotation, rocking motion, and frequently borne, the opening and closing the difficult parts of the formation of lubrication in boundary lubrication conditions, long-term use without refueling and maintenance, where the fuel bearing life can be more extended, currently applicable to metallurgical machinery, mining machinery, hydraulic machinery, automobile parts, construction machinery, agricultural machinery.

SF-2加界润滑轴承：酸多聚甲醛一高耐磨性，轴承表面的法律安排，必须配备与油脂填补了蓄水坑尤其是高负荷低转速旋转，摇摆运动，并经常承担，开幕和闭幕的困难部分在边界润滑条件下，长期不加油和维修，那里的燃料轴承寿命可以更延长，目前适用于冶金机械，矿山机械，液压机械，汽车零部件，工程机械，农业机械使用润滑形成。

Objective:To investigate the air pollution of decorating material markets to study the health effect of working people exposure to low concentration of formaldehyde and benzene homologues in that place.

目的：了解建材市场的主要污染物及其污染水平；研究低浓度甲醛、苯系物暴露对从业人员的健康影响。

One of you jokers laced my joint with formaldehyde again?

你们俩又把我的加入比作甲醛了？

Its reaction with ketenes generated in situ from acid chlorides afforded-4--azetidin-2-one, thus provided a 14-member library of-4--azetidin-2-one with yields 76～91% and an excellent stereoselectivity.

我们从PEG支载的苯甲醛出发，经腙的制备及其氯代之后，在三辛胺作用下，由氯代腙原位生成的腈亚胺与亚胺发生[3+2]偶极环加成反应，得到PEG支载四芳基-4，5-二氢-1，2，4-三氮唑衍生物。

From 70's to 80's of the 20th century, the consumption of polyformaldehyde of china wanders up and down in several kilotons for a long time.

20世纪70～80年代，国内聚甲醛消费量长期在数千吨级徘徊。

High-Al cement or calcium aluminate cement, soft clay, kyanite, Al2O3 and/or SiO2 powder, and naphthalenesulfonic acid-formaldehyde condensate.

铝硅质原料是焦宝石、莫来石或高铝矾土中的一种或几种以上，其中Al 2 O 3 ≥45％；结合剂为高铝水泥或纯铝酸钙水泥；高铝水泥占喷补料总量不少于5％，其中Al 2 O 3 ≥46％，CaO≤40％；纯铝酸钙水泥中Al 2 O 3 ≥69％，CaO≤25％；烧结剂和可塑剂为软质粘土，膨胀剂为蓝晶石；外加剂为萘磺酸甲醛缩合物。

The research of phenol-formaldehyde resin modified with lac can be expected to widen the application of the lac and enlarge the utilization of the renewable resource.

研究了对紫胶改性酚醛树脂胶粘剂的固化时间、接胶合板的粘接强度和甲醛释放量进行了测定。

By machining, To make the measure of area of large-grained spherical copper powder reach 70~80% of the working area of so, achieving the purpose of even alternately distributing of copper powder and POM.

通过机械加工，使大颗粒球形铜粉分布在工作面的面积达到70~80%左右，形成铜粉与改性聚甲醛基本均匀相间分布的状况。

To make the measure of area of large-grained spherical copper powder reach 70~80% of the working area or so, achieving the purpose of even alternately distributing of copper powder and POM. It has a good comprehensive ability of load-bearing, friction and wear endurance, creep resistance and heat conduction.

我们通过机械加工，使大颗粒球形铜粉分布在工作面的面积达到70~80%左右，形成铜粉与改性聚甲醛基本均匀相间分布的状况，其承载能力、摩擦磨损性能、抗蠕变能力和导热性等综合特性较好。

The slide-way of DF-8 high-strength, steel-base modified polyformaldehyde composite material is a kind of five-layered composite material composed of steel base, small-grained spherical copper powder, large-grained spherical copper powder, screw copper nail layer, superficial plastic, with the bearing structure.

DF-8高强度钢基改性聚甲醛复合材料轴承是由钢基体、小颗粒球形铜粉、大颗粒球形铜粉、螺旋铜钉、表层塑料构成的五层复合材料轴承。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。