appurtenance

常见例句

As an appurtenance of telephone, this alarm equipment is used to be alarm device for private house protect based on telephone system.
本报警装置是基于电话、作为电话的附属物而开发的一种家用防盗报警装置。
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As an appurtenance of telephone, this remote alarm equipment is used to be an alarm for private house protect based on the transmission of DTMF(Dual Tone Multiple frequency ).
本文设计的电话远程报警器是基于DTMF（双音双频信号）传输、作为电话的附属物而开发的家庭远程报警系统。
Safety guardrail is an important appurtenance to ensure traffic safety.
防撞护栏是确保交通安全的重要设施。