A language dies every 14 days, and half the languages spoken today are expected to vanish by 2100. Languages on the endangered list include.
每14天就有一门语言会消亡,今天在使用的语言中有一半会在2100年消亡。
Some applications of tool steels include drills, deep drawing dies, shear blades, punches, extrusion dies, and cutting tools.
工具钢的一些应用有钻头、深压模、底刃、冲床、挤出模及切割刀具等。
These may include open dies i. e. , dies that do not completely enclose the metal to be shaped.
其中包括开式锻模,就是不完全封闭被成型金属的模具。
Errors include edge clips, COINS struck on foreign planchet, flip over double strikes, and filled dies etc.
包括缺角、胚饼用错、正背面复打及模具锉痕等。
Errors include edge clips, COINS struck on foreign planchet, flip over double strikes, and filled dies etc.
包括缺角、胚饼用错、正背面复打及模具锉痕等。
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