幕斯塔法的修改使食品科学家在使用PCR测试时，可以有效利用其高效性、有选择性和敏感性，并且通过区分死亡细胞和活细胞避免误测。
Mustapha's modification lets food scientists use the PCR test to capitalize on its speed, selectivity and sensitivity, but avoid false-positive tests by differentiating between dead and live cells.
近期以来，软件开发渐渐被视为产生能帮助利用经济选择性的效益的活动。
Recently, software development is seen as something that generates revenue that can help to exploit economic options.
着重阐述了利用数字选择性呼叫技术的船舶跟踪系统的组成结构及其工作原理、技术指标；
Next, the structure, the working principles and the performance of the DSC Ship Tracking System which has been developed by the author is mainly described.
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