However, some drawbacks exist, such as high temperature agi ng in process of modification, low storage stability and degradation acceleration under ultraviolet.
但也存在某些不足，如改性沥青加工过程中的温度老化、贮存稳定性及在紫外线作用下降解加速材料老化等问题。
But there still exist some drawbacks, this can not meet the demands of international legal documents.
但是，其中仍然存在着一定的缺陷，与有关国际法律文件的要求存在一些差距。
He thinks, Chinese MBA education exist some drawbacks, such as teaching western, admission "imperial", teaching indoctrination of.
他认为，中国MBA教育存在着一定弊端，如教材西方化、录取“科举化”、教学灌输化等。
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