subsurface ['sʌbsə:fis, sʌb'sə:fis]

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adj. ���µģ������µ�
n. �ر�����ʯ

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a.   overhead��surface

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1. Petroleum and natural gas industries - Subsurface safety valve systems - Design, installation, operation and redress.
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2. Using a linear complementarity formulation, a theory of the coupling between the subsurface and surface flow is proposed.
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3. As a new technology for wastewater treatment, vertical subsurface flow constructed wetland has good practical value and application prospect in town sewage resourcing.
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adj.
  1. beneath the surface

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subsurface
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subsurface runoff
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subsurface flow
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subsurface water
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subsurface defect
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