But prices send important signals, making price controls a blunt instrument.

但是价格传达了一个重要的新号，使得价格管制成为了一种精确的工具。

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In the automatic mode, the pressure instrument on the filter test unit as described above controls the extruder speed.

在自动模式下，过滤检测模块中的压力仪器会控制挤出机速度。

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Methods83 patients with VBI and 57 healthy controls were tested with electronystagmogram instrument, include saccade test, Eye Tracking Test (ETT) and optokinetic test(OKN).

方法采用眼震电图仪对83例VBI患者进行眼动系统相关检查，并和57例正常人进行对照研究。

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Extras: Cold weather package, driver assist package, luxury seating package, premium sound package, 20 inch wheel with performance tires, active roll stabilization, instrument panel with leather, ceramic controls, and BMW apps.

FORBES: Car of the Week: 2012 BMW 650i

But controls are also a blunt instrument.

ECONOMIST: Free exchange