查询词典 Perca

By changing temperature and pH, the amylase, protease and lipase of Perca fluviatilis were studied in vitro.

研究了离体状态下河鲈体内淀粉酶、蛋自酶和脂肪酶在不同温度和pH时的活性变化。

Any of various spiny-finned freshwater fishes of the genus Perca, especially either of two edible species, P.

河鲈任何一种有刺状鳍的鲈属淡水鱼，尤指两种可食用类，北美洲的金鲈和欧洲的河鲈

PERCA can real-time, on-line, contimuously determine the atmospheric free radical, also volume small, the movement cost is low, is widely applied in the atmospheric chemistry research.

PERCA能实时、在线、连续地测定大气过氧自由基，且体积小，运行成本低，被广泛应用于大气化学研究中。

Used the PERCA method union tubular mobile technology basically to determine the free radical production of the ozone ethene reaction, the result has been consistent with the literature value.

采用PERCA方法结合管式流动技术测定了臭氧乙烯反应生成的自由基的产率，结果与文献值基本一致。

Perch (scientific name: Perca fluviatilis) perch to perch Section species of fish, the common name five black.

河鲈（学名：Perca fluviatilis）为鲈科鲈属的鱼类，俗名五道黑。

Used the PERCA method to carry on the determination to March campus environment atmosphere, had discovered the peroxy free radical signal had the obvious daily variation, the HO_2 free radical strongest about 14:00 appeared a peak value in the sunlight.

采用PERCA方法对三月份校园环境大气中的过氧自由基进行了测定，发现过氧自由基信号有明显的同变化，HO_2自由基在阳光最强的14：00左右出现一个峰值。

On Mar.20,1999,the Perca which is from Switzerland and the Jones which is from Britain had finished the travel around the world by hot air ballon through 20 days, totally they had flied 42810Kms.

1999年3月20日，瑞士人皮尔卡、英国人琼斯经过近20天的飞行，终于完成了首次乘热气球环球飞行的壮举，总计飞行42810公里

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。