half-value period
英 [hɑːf ˈvæljuː ˈpɪəriəd]
美 [hæf ˈvæljuː ˈpɪriəd]
n. 半值期
双语例句
- Since pure foaming agent with short half-value period causes a poor plugging effect for high-permeability reservoir with water channeling, this paper studies on gel foam sysem.
针对纯发泡剂半衰期较短、对已形成注入水窜流通道的高渗透储层封堵效果较差的实际问题，开展了凝胶泡沫体系的研究。 - However, these drugs have got many drawbacks like short half-value period, low fibrin affinity and high bleeding risk. So investigation of new thrombolytic drugs is still very necessary.
然而这些药物普遍存在半衰期短、纤维蛋白亲和力差或出血风险大等缺陷，因此开发新型溶栓药物仍然十分必要。