He didn't really know very much about javelin throwing.他其实并不太懂掷标枪....Steve Backley who won the javelin.标枪冠军史蒂夫·巴克利Harriet came second in the javelin.哈丽特掷标枪得了亚军.She achieved a throw of sixty metres in the javelin eve...
Experiments show a strong effect on the measured value if collimation angle is increased.实验表明,准光角增大会对测定值产生很大的影响.The error introduced by a finite collimation angle is a systematic one in apparent transmission.一定准光间所带来的误差是...