Early results on the photoelectric effect had not produced consistent results.有关光电效应的早期实验,并未取得协调一致的结果.This is obviously due to the Compton and photoelectric effects.很明显,这是由于康普顿效应与光电效应作用的缘故.Photoelectric spectrophotometer...
After the 1960 s, China began to inoculate BCG, pertussis, diphtheria, tetanus, measles and poliomyelitis vaccines.六十年代后, 中国开始在大、中城市接种卡介苗 、 百日咳 、 白喉 、 破伤风 、 麻疹、脊髓灰质炎的疫苗的工作.Recent studies suggested that erythromycin may b...
I was terrible at school and left with few academic qualifications...我的学习成绩一塌糊涂，离校时几乎没有学历。Unfortunately, his partners were crooks and absconded with the funds.不幸的是，他的合伙人都是些骗子，已卷款逃之夭夭了。Prices start at £1,095 per person, i...