Results the calculation result shows that spherical surface of the conductor buried in sandy soil presents not only primary and secondary scattered waves but also multiple wave and creeping.

结果表明埋藏在沙土中的导体球面不仅仅存在一次和二次散射波，而且还存在多次波和爬行波。

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The principle of secondary spectrum is introduced and the equations of designing apochromatism objective lens based on wave aberration are presented.

介绍了二级光谱的基本原理，给出了波差法设计复消色差物镜的方程组。

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This paper introduces the rock acoustic wave test in protective layer of dam foundation in Fenhe Secondary Reservoir and conducts more detailed analysis on the test result.

文中介绍了汾河二库基坑保护层开挖中对基岩的声波测试，着重对测试结果进行了较详细分析。

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And that's what's fueling the secondary wave, added in along with the decline in home prices.

NPR: Mortgage Crisis Spreads To Conventional Loans

The leaders of the international rescue operation insist that everyone received some assistance, and the feared secondary wave of deaths was averted.

ECONOMIST: Myanamar after the cyclone

They are worried that the first wave of pupils to experience it in secondary schools will underachieve in exams because their teachers are not sure how to turn the loose objectives into day-to-day lessons.

BBC: Row over plans for new curriculum in Scotland