All G. bird's material is carefully selected based on the quality and environmental double standards.
鸟的每一块材料都以品质和环保的双重标准进行精心挑选。
The results showed that the ER fluids carefully selected could be used as IR optical material and thus could probably find their new applications in optics.
利用ER流体的独特性质，可望在光学方面开辟一个应用新领域。
Best selected the plastic material in line with the Europe E1 standard and the steel material with good performance carefully, used to manufacture the desk top and desk bases.
Best精心挑选了符合欧洲e1级环保标准的塑料材料和性能良好的钢材用于制作桌椅面和桌椅脚。
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