Everyone who is going abroad will need to be immunised against typhoid.准备出国者均需注射伤寒预防针.An outbreak of typhoid followed.继而爆发了伤寒.Typhoid fever sneaks in when sanitation fails.环境卫生搞不好,伤寒就会乘虚而入....
Under the same chromatographic condition, gas chromatography quantitative analysis of the butachlor and simetryne were discribed.首次报道了丁草胺和西草净在同一色谱条件下的气相色谱定量分析.Sensitivity of the week seedling to butachlor is higher than ...