强化
发表于 2025-3-25 03:26:10
Hani T. Azzamve become the primary beneficiaries of these job opportunities and the determinants of the construction industry’s culture. This extreme gender stratification and macho nature of construction work has been identified as one of the main obstacles influencing women’s career decisions and forms the bas
CALL
发表于 2025-3-25 08:59:20
Status of Air Pollution Control Regulations,are being developed. This provided that the Environmental Protection Agency (EPA) should issue national ambient air standards, which was done on April 30, 1971. These provided nationwide standards for particulate matter, sulfur dioxide, carbon monoxide, oxides of nitrogen, hydrocarbons, and photoche
Admonish
发表于 2025-3-25 15:44:35
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借喻
发表于 2025-3-25 15:56:15
Methylated Urea Formaldehyde Cross-Linking Agents in Aqueous Emulsions,fforts have been directed toward new coatings or coating methods which can fill existing customer needs while eliminating the associated pollution problems. Much of that effort has been or is going into water based coatings. The principal advantages and disadvantages of water based coatings over con
皱痕
发表于 2025-3-26 00:03:07
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archaeology
发表于 2025-3-26 02:54:55
Performance Characteristics of a Fast Curing Acrylic Resin in Electrocoating Paints,onsiderable interest has developed in an electrocoating system for white single coats requiring either a lower baking temperature or a shorter baking cycle. At present, most of the existing saturated anionic resin systems require a baking temperature of 150.C. or higher for a period of 15 to 30 minu
出来
发表于 2025-3-26 04:41:29
Electrodeposition Systems: Composition, Characteristics, Performance and Maintenance,r steel, high speed coatings, low bake coatings, automotive primers, cathodic deposition and a host of other uses vary significantly in characteristics and performance. These differences result directly from the types and amounts of the selected materials incorporated in a particular formulation. On
苦笑
发表于 2025-3-26 10:04:01
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光明正大
发表于 2025-3-26 15:54:57
The Ultraviolet Curing of Coatings,otocopying and photo-printing. The potential of using rapid photo-induced reactions that do not depend on thermal energy for the cure of coatings is attractive for three principal reasons: the steady economic drive for faster curing coatings, the increasing need to coat heat sensitive materials, suc
aggressor
发表于 2025-3-26 17:53:43
,The Ultraviolet Cure of Solventless Resins — A Pollution Free Method?, solids coatings. One common variety of solventless resins consists of solutions of organic prepolymers containing aliphatic unsaturation dissolved in copolymerizable organic monomers. Examples of such resins are solutions of unsaturated polyesters in styrene or vinyl toluene, or solutions of polyme