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汉语拼音：xuǎn zé xìng

一个电路或仪器选取有用信号并拒绝无用信号的程度的一种定量或定性度量。

选择性 [xuǎn zé xìng]

1. 表征电子设备和无线接收机在众多频率中选出有用频率并抑制不需频率的能力。是衡量无线电接收机的一个重要指标。

• One of the meeting's main outcomes was an agreement on the use of new, more selective types of netting in bottom trawls .

  该会议的一个重要成果即是通过一项协定：在拖网渔业上使用新的、有更多选择性的网钓方式。

• The number of international authorities the chancellor selectively quoted in support of his view does not make it valid.

  为了支持自己的观点，奥斯本有选择性地援引了诸多国际权威机构的论点，但这无法令人信服。

• The traditional answer to this question was that most of the sun's radiation is visible light, so our eyes evolved to see those wavelengths.

  一般对这一问题的回答是：大多数的太阳光都是可见光，所以我们的眼睛在进化过程中已经形成了选择性偏好。

• The selectivity of inhibition is at least as good as that shown by a small interfering RNA targeted to a deletion polymorphism.

  选择性的抑制，至少不如说表明了一个小干扰RNA针对一缺失多态性。

• Each of the plurality of local oscillators can be selectively coupled to the front end circuits.

  所述多个本机振荡器中的每一个可以选择性地耦合到所述前端电路。

• The selective accretion theory chalks it up to high gas density in the early solar system, during the planet's formation.

  选择性附加理论写出它的高气体密度在早期太阳系，在行星的形成。

• Most of these alternative splices were supported by two or more transcripts.

  大多数选择性剪接都为两个和多个转录本所支持。

• The alliance should be a hard-headed "partnership of choice" serving national interests on both sides, he said.

  他表示，结盟将是一次头脑清醒的“选择性的伙伴关系”，符合双方的国家利益。

• The system also includes a grease cover selectively positioned at least partially within the groove portion.

  所述系统还包括被选择性地至少部分地定位在所述沟槽部分内的润滑脂盖。