CLIA using acridinium ester derivatives as chemiluminescent label has advantages of low background and high signal-to-noise ratio.

以吖啶酯衍生物为发光标记物的CLIA的特点是：自然本底低和信噪比高。

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It has many advantages, such as high sensitivity, low background and good stability.

该装置灵敏度高、本底低、稳定性好。

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The heavy disease areas were mainly distributed at carbonate rock areas, with low background iodine in rocks, soils and water;

重病区主要属岩石、土壤和水碘背景含量低的分布区，其岩石类型主要为碳酸盐岩；

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Such sustained success over time while laying low in the background is a textbook example of how to lead through proper delegation of authority.

FORBES: Dr. Jerry Buss Remembered: Masterful Showman and Brilliant Businessman who Artfully Delegated Authority

Longer battery life requires lower power consumption in both high performance and low performance modes (MP3 decoding, background processing, etc.).

ENGADGET: Toshiba mobile RAM uses prediction, adaptation to cut power use by up to 85 percent

In the London area there's a constant low-level clacking noise in the background, reminiscent of the typing pools of yore.

BBC: Why air traffic control still needs the human touch