Beef the rim up and make it extra heavy as well.

加强车圈而增加了额外的重量.

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Ideal for extra heavy and extra long items.

用于存放特别重又特别长的货物.

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The deep, extra - heavy oil reservoir in Leng 42 fault block is recovered by cyclic steam stimulation.

深层特稠油油藏冷42断块依靠蒸汽吞吐开发,由于回采水率较低,因此开发效果较差.

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Top - mounted, extra heavy - duty anode for added tank protection, extending the life of the tank.

强力阳极棒安装在热水器顶部, 有利于强化内胆保护, 延长内胆使用寿命.

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