Passive films on the flow piping of oil and gas are easy to damage by HCO 3 - so as to bring about fail of pipeline and heavy loss.
油气输送管道表面的钝化膜易遭受HCO-3破坏，从而引起管道报废造成重大损失。
When PVP or HCO-60 was added to a deuterated chloroform solution of nitrazepam, the 1H-NMR signals of N (1 )-H shifted to lower magnetic fields.
PVP等在氘代氯仿中可使硝基安定1位氢的核磁信号向低磁场方向位移。PVP与硝基安定的相互作用比HCO-60等要强。
The feature of the technology is that the HCO from FCC is recycled to the inlet of the residue hydrotreating reactor, instead of recycle to FCC itself.
该技术的特点是将加氢后的渣油作为FCC的原料，并将FCC的回炼油循环到渣油加氢反应器的入口，而不是自身循环。
The feature of the technology is that the HCO from FCC is recycled to the inlet of the residue hydrotreating reactor, instead of recycle to FCC itself.
该技术的特点是将加氢后的渣油作为FCC的原料，并将FCC的回炼油循环到渣油加氢反应器的入口，而不是自身循环。
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