pressure balance valve是什么意思 pressure balance valve怎么读
pressure balance valve的相关资料
pressure balance valve的用法和样例
- All that is required is a valve.
全部所需的就只是一个活门。 - As your baby feeds, the built-in anti-colic valve flexes to allow air into the bottle to prevent vacuum build-up.
当你喂宝宝的时候，内置的防绞痛活门，可以让空气进入奶瓶，防止瓶内发生真空状态。
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