EJB规范比较成熟，因而有许多优势：众所周知的设计模式、案例研究和最佳实践，还有丰富的供应商支持的开发工具集。
The EJB specification is mature, yielding the benefit of well-known design patterns, case studies, and best practices, as well as a rich set of vendor-supported development tools.
由于绝大部分运行级数字都定义了明确的含义，因而它们基本上是“众所周知”的。
These runlevel numbers are on the whole "well-known," in the sense that most of them have very clearly defined meanings.
众所周知，水下声信道是相干多途信道，信号在信道中的多径传播使得接收信号序列复杂化，因而极大地增加了信号处理的难度。
It's well known that underwater acoustic channel is a coherent multi-path channel, which brings difficulties in signal processing because of the complexity of the received signal sequence.
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