1) w-sequence
w-数列
2) W-coutably compact
W-序列紧
3) w~*-sequentially compact
w~*-列紧
4) W series
W系列
1.
In this paper it is indicated that the top grade hot work mould steel manufactured in overseas should possess properties and the sorts,characteristic and metallurgy method of W series hot work mould steel is summarized,It is emphasized that the application of ESR and VMR in smelting hot work mould steel is only strengthened in china,we can narrow the gap with developed country.
指出了国外高档热作模具钢所应具备的性能,概述了W系列热作模具钢的种类、特性和冶炼方法,强调我国只有加强电渣重熔和真空电渣重熔在冶炼热作模具钢中应用,才可以缩小与发达国家的差距。
5) W-cyclotomic sequence
W-割圆序列
6) w sequential convergence
w序列收敛
补充资料：R阶差数列
相邻两项相减,得到一个新数列,一直如此操作直到得到常数列,减了几次,就称为几阶差数列
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条