If different handling of a given field is required for service matching and target system update, then two versions of the field should be created to satisfy those different objectives.

如果为了匹配服务和更新目标系统而需要对给定的字段进行不同的处理，那么应该创建该字段的两个版本，以满足那些不同的目的。

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General Dynamics' JSLSCAD is the first chemical detection system designed with a 360-degree coverage field and range up to two kilometers.

通用动力的JSLSCAD是第一种可以360度扫描、范围达2千米的化学探测系统。

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The current measurement and control system in a Low-frequency Magnetic Field is a comprehensive system of hardware and software, including two parts: current measurement and computer control.

低频电磁场电流测控系统包括电流测试和输出控制两个部分，由软件和硬件相互配合组成一个完整的计算机控制系统。

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So the fact that new weapons programs may take 20 years to reach the field in a political system that operates on two- and four-year cycles is a real threat to keeping those programs on track.

FORBES: Top Five Reasons Weapons Programs Are Canceled