The cloth by the impeller center cone will materials uniform assigned to each launch port, impeller in launching nozzle, install a special material made of wear-resisting block, can change.

由叶轮中心的布料锥体将物料均匀的分配到叶轮的各个发射流道，在发射流道出口，安装有特殊材料制成的耐磨块，可以更换。

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Rival political parties have joined forces to block Mr Roh from launching the national referendum, casting doubt on whether the vote will take place in December at all.

ECONOMIST: The president calls a referendum on his fitness for the job