The modified Lindstedt-Poincaé method(MLP) is used t analyze strongly nonlinear vibration of beams. Attention is focused on the superhamonic and subharmonic resonances.

本文采用改进的L -P法研究梁的强非线性振动，分析了超谐波共振和次谐波共振两种情况。

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Attention is focused on the necessity and the method of giving legal protection to commercial secrets. And emphasis is laid on the matters of legal protection in commercial secrets of stock companies.

探讨商业秘密法律保护的必要性、保护途径，并着重阐述了对上市公司商业秘密的依法保护问题。

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Attention is focused on a new method to reduce the numerical dispersion of the 3-d Alternating-Direction Implicit Finite-Difference Time-Domain (ADI-FDTD) method through artificial anisotropy.

该文研究一种减小三维交替方向隐式时域有限差分法(ADI - FDTD)数值色散的新方法。

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The loss of the hi-tech equipment has focused attention on the data gathered by the tried-and-tested method of drilling through the ice by hand.

BBC: Arctic team gives up on ice radar