Indication of area: the size of the metal object detected can be displayed, and the requirement of the operator's research to determine whether it meets the excavation requirements;
Everyone knows that a chopstick is slightly broken, but putting more chopsticks together is a difficult thing to break.
Before discuss nursing position, let us know about the secret: small ears inside the baby's ears into three parts of outer ear, middle ear, inner ear, the middle ear is a relatively sealed chamber, in the front wall there is a small tube connected to the nose pharynx ministry, is called the eustachian tube.
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