What is primary or secondary stress?
什么是一次应力、二次应力？
Primary factor of producing cracks is temperature stress.
其中温度应力是闸墩裂缝成因的最主要原因。
The primary analysis considered the effect could be relative to tectonic stress field.
初步分析认为，这种现象可能与现代构造应力场有关。
The characteristics of exercise stress test in patients with primary hypertension;
目的探讨运动试验对冠心病患者短程心率变异性的影响。
The characteristics of exercise stress test in patients with primary hypertension;
目的探讨运动试验对冠心病患者短程心率变异性的影响。
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