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1·We perfected a hand-signal system so that he could keep me informed of hazards.

我们完善了一套手语体系，以便他能告知我危险。《柯林斯英汉双解大词典》

2·Studying the craft and design of the PCB in high frequence signal system.

研究了高频电子印刷板的设计原理，并掌握了制作工艺。

3·An early investigation blamed the signal system failure on a loss of power.

初期调查是归咎于停电造成信号灯故障。

4·The paper introduces the basic concept of speed-different mode signal system.

介绍速差式信号制式的基本概念；

5·Metro signal system is core component to ensure trains efficient and safe operation.

地铁信号系统，是保证列车高效、安全运行的核心部件。

6·And the signal system can be analyzed in the time domain, can also frequency domain.

对信号和系统进行分析研究可以在时间域，也可以在频率域。

7·To investigate the distribution of KIR-HLA signal system in Guangdong Han population.

目的探讨广东汉族人群KIR - HLA信号系统表达规律。

8·While the underlying concepts haven't changed, the signal system has been moved from GTK+ 2.0 to Glib.

尽管基本概念并没有更改，但信号系统已从 GTK+ 2.0 迁移到 Glib。

9·Signal system upgrade mine hoist control system is an important component performance of the system.

提升信号系统的改造是煤炭企业技术改造的一个重要组成部分。

10·To FPGA development platform for the traffic signal system, with a countdown and the buzzer function.

以FPGA为开发平台的交通信号系统，带有倒计时和蜂鸣器功能。