可卷卷的头发、金属框眼镜和愉快的笑容背后却是一个12岁的非法盗版人——至少在美国唱片行业协会看来是这样。
However, behind the curly hair, wire-rimmed2 glasses and happy smile is a 12-year-old pirate3—at least according to the Recording Industry Association of America (RIAA).
但是，根据美国材料实验协会固定，金属对金属球体出厂的最大误差不能超过5mm。
However, the maximum initial allowable departure from a sphere for metal-on-metal hip implants is specified as 5 mm by ASTM F2033.
美国能源部、金属学会的热处理学会和热处理协会于1996年召集了企业界的20名热处理专家讨论提出了热处理2020年的设想目标。
In February 1996 it had a meeting of 20 leaders of U. S. heat treating community for discussion to draw up a Heat Treating Industry Vision 2020 under the commitment of U. S. Department of Energy(DOE).
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