姑娘颤抖着，抬头望了望山谷边缘，想着是否要无果而返。
The lady trembled, and cast her eyes upward to the verge of the basin, as if meditating to return with her purpose unaccomplished.
对无因次返混流率与操作参数和几何参数进行了关联。
Finally the dimensionless backmixing rate is correlated with the operating parameters and geometric parameters.
结果28例食管癌患者手术经过顺利，无吻合口漏，无吻合口狭窄和食管返流。
Results The 28 patients have not anastomotic leakage, anastomotic stenosis and esophageal reflux.
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