This optical instrument factory is well-known for accurate optometry, fine grinding and good quality.
该光学仪器厂，验光准、磨制精、质量优。 收藏。
Every instrument here is produced in our factory.
这里的每一台仪器都是我们厂生产的。
Electrical calibration for an instrument should be done in the factory.
仪器在出厂时已进行了电气标定。
Electrical calibration for an instrument should be done in the factory.
仪器在出厂时已进行了电气标定。
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