mothball

Firstly,standard curve for the determination of naphthalene content in camphor pellets was established using pure naphthalene as standard material and methanol as eluent.

市售卫生球中萘含量的测定受到关注。

Methods:Comphor ball of metal treatment for ears on the surface of at the early stage was performed in 106 cases(210 ears) of deep Ⅱ° burn.

方法 :应用金属卫生球磨擦的方法处理早期深Ⅱ度耳廓烧伤创面。

Globalized public health crises have made it urgent and necessary to implement global health governance.

公共卫生安全危机的全球化,彰显了全球卫生治理的紧迫性和必要性。