The boron-doping technology and metallurgical micro-structure of die steel are discussed from the angle of its resistance to repeated shock compression.
结果指出：模具钢渗硼层在多次冲击压缩载荷下发生一定的塑性变形。
Objective: to find a method to replace venesection, to help severely burned patients tie over shock stage and to relieve pains ceased by repeated venipuncture.
摘要目的：为重度烧伤病人渡过休克关争取有效时间，减少反复外周浅静脉穿刺的疼痛，取代传统静脉切开。
This paper also presents a reduction factor of strength required for checking shock strength based on the test results of embedded elements under low period repeated loading.
文章还根据预埋件在低周反复荷载作用下的试验结果，提出了在进行抗震强度验算时所需的强度折减系数。
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