但由于客观条件所限，实验所需要的数据无法及时获得，所设计的模型中的一些参数需要进一步研究。
The experiment data can not acquire in time due to external condition. It needs further research about the parameter of the design models.
目前在水闸老化评估时，由于客观条件的限制或者经济上的原因，有时不能取得全部必需的资料，给评估造成困难。
Owing to the limitation of objective condition or the reason of economy, sometimes, there may lack of necessary data and bring difficulties to rating works for sluice deterioration.
但是由于部分高校被自身存在的客观条件所制约，使网球运动在高校中开展的并不顺利。
However, because some colleges and universities to be self-constrained by the existence of objective conditions, to tennis in college is not smoothly carried out.
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