Terms containing double-length arithmetic

Subject	English	Chinese
space	double length arithmetic	双字长运算
tech.	double length arithmetic	双倍位运算
space	double word length arithmetic	双字长运算
el.	double-length arithmetic	双字长运算
IT	double-word length fixed point arithmetic	双字长定点运算
tech.	fixed-point double word-length arithmetic	定点双字长运算