left identity element 左幺元 ; 左单位 ; 左么元 identity element for multiplication 找出乘法的元素 identity element for addition 找出加法的元素 ..
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与盐酸左氧氟沙星组相比，加替沙星组每增加一个单位效果需多花费91.0元。
The cost for every one unit increment of effectiveness for gatifloxacin group was 91.0 yuan more than that of the levofloxacin hydrochloride group.
左，右170hz高通滤波器输出，它填补了无缝底端让各种单位的工作与增加中端清晰更有效。
With left and right 170hz HPF outputs it seamlessly fills the bottom end letting the full range units work more efficiently with increased midrange clarity.
病理染色图象分析测定左室腔周长和面积、单位面积内心肌细胞核数、单位面积内胶原的含量；
Pathological staining and image analysis were used to determine the perimeter and the area of left ventricular cavity, and myocardial nuclei number and collagen content per unit area;
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