Your dentist can check your mouth and teeth for open cavities and gum disease that cause bad breath.

牙科医生能检查出引起口臭的牙洞和牙龈疾病。

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Generalized ray expansion (GRE) method was used to study the problem of electromagnetic scattering by open cavities.

利用广义射线法(GRE)来研究开口腔体的电磁散射问题。

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The complex heat transfer of turbulent natural convection combined with surface radiation in open cavities is analyzed by numerical method.

用数值方法分析了开口空腔中的湍流自然对流与表面辐射相互耦合的复杂传热。

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Carbo Ceramics is a leader in making what's called ceramic proppant, which is the synthetic material, sand-based often, with chemicals that are injected into the fractured rock to hold open the cavities so the natural gas goes up into the piping that captures it.

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