short period value

Long lead-times , short sales period , low salvage value and volatile markets etc characterize perishable goods.

易逝品具有生产提前期长 、 销售期短、期末残值低、需求不确定性大等明显特征.

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It is one of development direction of measuring true value in precision test of missile fire control system, because of its simple usage, short test period and high success probability.

差分GPS测量技术使用方法简单，试验成功率高，周期短，受气象条件影响小，是导弹火控系统精度试验、真值测量方法的发展方向之一。

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The method has the short period and good performance, and certain draw lessons from expansion value.

该方法具有缩短工期、安全效益好的特点, 具有一定的借鉴和推广价值.

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However, these drugs have got many drawbacks like short half-value period, low fibrin affinity and high bleeding risk. So investigation of new thrombolytic drugs is still very necessary.

然而这些药物普遍存在半衰期短、纤维蛋白亲和力差或出血风险大等缺陷，因此开发新型溶栓药物仍然十分必要。

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The pH value declined from 9.0 to 5.3 in a short period had only a little influence on the removal of NO2 and NO.

pH值在短时间内由9.0降至5.3对NO2和NO的净化影响较小。

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