The new measurement system of thermal deformation adopts combined gauges as standard length, single switchable measuring head and inductance micrometers to carry on relative measurement.

该装置以组合量块为标准，采用可换向的单测头和成本较低的电感测微仪进行定位测量。

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After analyzing the elevator strategy of the disk scheduling for the single head disk system, this paper explains an elevator scheduling for two-headed disk system.

首先对单头磁盘系统的电梯策略进行简要分析，然后根据双头磁盘系统的特点给出相应的电梯调度算法。

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Single head cam system, tuck cam both in front and rear meddle beds, car has high-butt and low-butt select function, controlled by step-forward motor .

单头三系统，前后针床皆可中山吊目，三角具有高低脚针选择功能，皆采用步进马达驱动。

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The UK - which is considered as a single system, rather than four devolved administrations - is then ranked at the head of an above-average group including the Netherlands, New Zealand, Canada and Ireland.

BBC: UK education sixth in global ranking