不含树脂的冷杉木料。
根据本发明，不含树脂的焊膏由一种金属粉末，特别是软焊料和一种凝胶体制成，其中，根据本发明的凝胶体在重熔金属粉末的过 程中，不在金属表面上留下残留物。
The invention relates to a nonresinous solder paste made of a metal powder, especially soft solder, and a gel which leaves no residues on the metal surface when the metal powder is melted down.
非金属材料是指如木头，塑料，橡胶，环氧树脂，陶瓷及金刚石等那些不含有金属基材的材料。
Nonmetallic materials are those materials such as woods, plastics, rubbers, epoxy resins, ceramics and diamonds that do not have a metallic base.
除氢、氧、氢氧根离子而不含其它离子的水，一般是用离子交换树脂生产，用于前处理工艺的最后一道水洗。
Water containing no ions other than hydrogen, oxygen and hydroxyl ions. Usually produced through the use of ion exchange resins and used for the final rinse in pre-treatment processes.
方法测试和比较含氟牙釉质粘接剂及不含氟牙釉质粘接剂的剪切强度以及扫描电镜下粘接剂渗入酸蚀后牙釉质表面形成的树脂钉突长度。
Methods To test and compare the shear bond strength and the penetration depth of resin tags of fluoride-releasing orthodontic adhesives with those of the traditional orthodontic adhesive.
本发明的树脂组合物不含卤素，无 需添加其它有机磷系阻燃剂；
The resin composite of the invention is halogen-free and dispenses with other organic phosphorus flame retardants;
一种底层涂料组合物，该底层涂料组合物含有主体树脂和稀释溶剂，含或不含助剂，其中，该底层涂料组合物还含有可在紫外光下固化的树脂及光 引发剂。
The invention relates to prime paint combination contains main body resin, diluted solvent, auxiliary agent or not, and photo-initiator which can be solidified in ultraviolet light.
树脂和粘合剂(木质素)是锯末中自然存在的，能够使木屑颗粒粘合，所以它们通常不含添加剂。
Resins and binders (lignin) occurring naturally in the sawdust hold wood pellets together, so they usually contain no additives.
树脂和粘合剂(木质素)是锯末中自然存在的，能够使木屑颗粒粘合，所以它们通常不含添加剂。
Resins and binders (lignin) occurring naturally in the sawdust hold wood pellets together, so they usually contain no additives.
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