持续暴露在强度高于80分贝的噪声中可能有害。Continuous exposure to sound above 80 decibels could be harmful.典型的割草机发出的声响约为90分贝.The typical lawn mower makes about 90 decibels of noise.普通的谈话即可达55分贝.A normal conversation reaches 55 decibels....
The cheaper FNDs fluoresce roughly as well as those produced with an electron beam.此种廉价FND所发的荧光与用电子束生产的FND所发荧光大致相同.The radar beam can track a number of targets almost simultaneously.雷达波几乎可以同时追着多个目标.A high quality beam ha...
The conformability between E _ 2 - HRP and DCC was 67 %.在15例胃癌中,DCC法与E_2-HRP法的符合率为67%.Objective : To Study the relationship between the expression of DCC and the biologic behavior in colorectal carcinoma.目的: 探讨DCC基因 在大肠癌...