Our main products include solenoid valve, thermostatic expansion valve, sight glasses, filter dryer, pressure controller, pressure difference controller , temperature controller.

公司主要产品为电磁阀、热力膨胀阀、视液镜、干燥过滤器及压力、压差控制器。

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Glasses are, of course, an indispensable thing, but they worsen the sight.

视镜是必不可缺的，可是它们妨碍了视线。

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It is only the prescription of stronger and stronger glasses that pushes the eye into a sight-threatening condition, with the tissues of the eye under enormous stress.

只有加深眼镜再加深眼镜，眼睛的组织承受巨大的压力，把视力推到了视力威胁的情况。

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He could, of course, improve his sight with glasses or contact lenses, but chooses not to.

BBC: Korea's blind' archer Im Dong-Hyun aims for 2012 gold

The glasses, which thrust wearers into darkness, have been required for sight-challenged athletes running in triathlons overseen by the defendants since 2010, according to Bernstein.

CNN: SHARE THIS

Five days of trading the field glasses and taking turns crawling back into the trees to smoke out of sight.

NEWYORKER: The Tree Line, Kansas, 1934