A cosmic gamma-ray burst striking the Earth could be harmful to ocean plankton at depths of up to 75 m, according to a team of Cuban researchers.
根据古巴一个团队的研究结果，一次袭击地球的宇宙中伽马射线爆，对于深至75米的浮游生物仍然是有害的。
Ray model is one of the conventional sound propagation models, which can be used to model the sound propagation in the irregular ocean environment.
射线模型是比较常见的传播模型之一，可以用于不规则海域声传播建模。
We study the mechanism of acoustic normal mode coupling from the aspects of ray-mode transformation and interference structures of acoustic waveguide in the ocean.
结合广义射线简正波转换、声场强度干涉结构研究了简正波耦合机理。
Welcome friends to visit Sporting Goods co., Ltd., Dongguan City, Ocean-ray visits, guidance and business negotiation.
欢迎各界朋友莅临东莞市洋光体育用品有限公司参观、指导和业务洽谈。
Welcome friends to visit Sporting Goods co., Ltd., Dongguan City, Ocean-ray visits, guidance and business negotiation.
欢迎各界朋友莅临东莞市洋光体育用品有限公司参观、指导和业务洽谈。
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