... minimum water uptake最低吸水 low specific density低比重 excellent impact strength at low temperatures在低温下耐冲击强度 ...
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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.
月球的低重力也意味着由普通氢气和氧气组成水将会比重水更快的消失，可能导致在月球上水的氘含量。
The moon's low gravity also means that water composed of regular hydrogen and oxygen will escape quicker than heavy water, perhaps leading to a concentration of deuterium in the water of the moon.
在2005年个人储蓄率——税后收入储蓄比重——低至1个百分点。
The personal savings rate - the share of after-tax income saved - reached a low of about 1 percent in 2005.
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