Radiofrequency ablation may be used repeatedly to treat recurrent liver tumors.
射频消融术可反复使用以治疗复发性肝肿瘤。
The present invention is used for the quantitative suction of medicine powder and may be used repeatedly.
本发明使用安全，可以完成药粉的定量吸入，并可重复使用。
The process can be simplified and the rate of esterification yield may reach 85%. The catalyst may be used repeatedly.
反应产物的处理可以简化，酯化收率可达85%，催化剂可重复使用多次。
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