At present, the community cultural service facilities that can be provided for farmer workers to make use of are in low total amount supplying, unbalanced distribution and less categories.
当前可供农民工利用社区文化服务设施供给总量偏低、分布不均衡且种类较少。
However, the heavier unbalanced radial force existed in the traditional two-gear's gear pump is a chief factor to affect the pump's service life.
但是传统的二齿轮式齿轮泵存在较大的不平衡径向力，成为制约齿轮泵寿命的主要因素。
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