Causes for blocking-up of chlorine-feeding pipelline in fluid catalytic cracking unit (FCCU) is analyzed and measures and precautions to be taken proposed.

简述了催化重整装置注氯线堵塞的成因，并提供了注氯线堵塞的应对办法和预防措施。

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Especially, the side-open "conic duckbill" mounted on the unit effectively presents the soil blocking up problem.

特别是侧向开启圆锥形鸭嘴有效地避免了堵土问题，是一种极有前途的新颖部件。

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In petroleum chemical industry, the technique of blocking up leakage with pressure make the production run normally, and bring the firms lots of benefits.

在石油化工生产行业中，不停车实施带压堵漏技术，使生产正常进行，给企业带来了可观的潜在效益。

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Gylfi Sigurdsson and Birkir Bjarnason opened up the visiting defence and Kolbeinn Sigtorsson fired in a shot from the near post which Martin saved before also blocking the follow-up from Sigurdsson on the penalty spot.

BBC: Iceland U21 2-1 Scotland U21

"Blocking technology made pop-up ads basically extinct, and I don't think anybody feels pity for them, " he says.

FORBES: Magazine Article

Pop-up blocking software can help limit the images from being displayed on websites.

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