Maintaining that balance is never easy, and this administration has strayed, but not as often or as damagingly as the Bush team did.
保持这种平衡不是容易的事情，但是这个团队管理不善，没有布什团队效率高。
But, on balance, our instinct is towards change rather than continuity: Mr Kerry, not Mr Bush.
不过，两相权衡，直觉告诉我们，应该作出改变，而不是走在老路上：我们选择克里先生，而不是布什先生。
Bush put an end to that fragile balance.
布什结束了这一脆弱的平衡。
They are particularly suited to low specific gravity applications where the back-to-back design and center bush provide natural axial balance and additional shaft support.
该类型泵特别适合于低比重介质的工况， 在这种情况下背对背的设计及中间衬套可以产生自然的轴向平衡和附加的轴支撑。
They are particularly suited to low specific gravity applications where the back-to-back design and center bush provide natural axial balance and additional shaft support.
该类型泵特别适合于低比重介质的工况， 在这种情况下背对背的设计及中间衬套可以产生自然的轴向平衡和附加的轴支撑。
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