Heterosexual contact is responsible for the bulk of HIV transmission.
异性间的性接触是造成大多数艾滋病病毒传播的原因。
It is designed to work with most bulk products including oils, transmission fluid and coolants.
它设计用于包括油、传输液体和冷却液等大多数散装产品。
The classical stability analysis theory is limitary to deal with bulk AC-DC hybrid transmission system.
大规模交直流混合输电系统的出现使得经典的电力系统稳定性分析理论受到了局限。
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