In one, subjects eyeballed a line simply to estimate its length - a task that played to American strengths.
一项是被研究对象用目测来确定一条直线的长度——此任务对美国人来说较合胃口。
The regression formulae to estimate the length of catheter were calculated from the anterior median line by means of regression analysis.
插管长度与前正中线相关回归方程式为：肠系膜上动脉（?）
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