塑料使我们从自然的限制中得到解放，从长期限制人类的活动的材料限制和有限的供应中得到解放。
Plastics freed us from the confines of the natural world, from the material constraints and limited supplies that had long bounded hu man activity.
因而钻石化学蒸发沉淀的应用受到材料限制，要求材料在此温度下不软化例如硬质合金。
Thus, the application of diamond CVD is limited to materials which will not soften at this temperature such as cemented carbides.
等离子熔射快速模具制造是快速模具制造技术的一种，因其具有不受模具尺寸和熔射材料限制等优点而受到关注。
Plasma spray metal tooling has obtained a special attention for its advantages of fewer limits on the pattern's size and spraying materials.
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