The catheters with core was selected in experiment group, and without core in control group.
实验组以带管芯的气管导管行盲探经鼻气管插管术，对照组则不带管芯。
Effective evaluating parameters for core collection were selected.
筛选出了评价核心种质代表性的有效参数。
The core of this method is the selected-frequency amplifier.
而选频平衡法的核心是选频放大器。
The selected growth condition was to keep the carbon fiber core solid after CVD growth.
生长条件使碳纤维中心在CVD生长结束后仍保持固态。
The selected growth condition was to keep the carbon fiber core solid after CVD growth.
生长条件使碳纤维中心在CVD生长结束后仍保持固态。
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