Aiming at the spectrum spread problem of traditional digital modulation signals, a time-phase modulation (TPM) method with abrupt phase change characteristic is proposed.

针对传统数字调制信号频谱扩展问题，提出具有相位突变特性的时相调制(TPM)方式。

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Nowadays, energy crisis is a world problem which has to solve. The technology of phase change for heat storage is signality for energy source allocation.

能源危机是当今世界迫于解决的问题，相变储热技术对于能源的合理配置意义重大。

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This problem deals with the phase change of a substance with the boundary conditions specified at the moving boundary.

这问题讨论移动界面中带有边界条件物质的相变。

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