Including logs , sawn wood , veneer sheets and plywood 4包括原木、锯材、饰面木皮及夹板。
2.
In the study of the effect of electric field on the binding property of copper foil - covered veneer sheet , because of lack of experimental method and the complexity of the object studied , it is not found the regular effect of electric field on the binding strength between copper foil and veneer sheet or on the inter - laminar binding strength of veneer sheet . but it is further testified that dc electric field makes the free linkage generated during solidifying of epoxy resins orient along the direction of electric - power line 在直流电场对覆铜箔板粘接性能影响的研究中，由于受实验手段和研究对象复杂性的限制，没有发现直流电场对覆铜箔板铜箔与基体及基体层间的粘接强度产生规律性影响，但在研究中进一步证实了直流电场会使环氧树脂在固化过程中形成的交联键沿电场方向取向。
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