shell length growth rate 壳长增长率
With the increasing of the light period length, the growth rate and cell density rose gradually and exogenous phosphorus level declined rapidly in the water.
延长光照时间能加快微囊蓝细菌的生长速率和提高微囊蓝细菌的密度。
The results showed that there were significant decreases in length increment, special growth rate and daily weight gain of the juveniles with the increase in stocking density increase.
试验结果表明，各密度组地图鱼幼鱼的生长速度存在明显差异，增重率、增长率、特定生长率和平均日增重都随养殖密度的增加而降低；
On the basis of this, an automatic measurement technique of fatigue crack length in fatigue crack growth rate test under corrosive circumstance is established.
在此基础上，建立了腐蚀环境下疲劳裂纹扩展速率试验中裂纹长度的自动检测技术。
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