这时候，这个神秘的符号常数涂鸦开始。

That is when the constant scribbling of this mysterious symbol started.

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而基于双层符号常数模的多径水声信道盲均衡器，具有收敛速度快，超量均方误差和计算复杂度小等特点。

The DSCMA-based multipath underwater acoustic channel blind equalizer has many features such as fast convergence, low excess mean square error and low computational complexity, etc.

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例如，常数oxffffffffl是一个有符号的long类型。

For example, the constant OxFFFFFFFFL is a signed long.

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