The primary signal is desiredSize on the controller. It can be positive (wants data), zero (at capacity), negative (over capacity), or null (closed). Producers are supposed to check this value and stop enqueueing when it's not positive. But there's nothing enforcing this: controller.enqueue() always succeeds, even when desiredSize is deeply negative.
"It is the only piece of science I've ever done that's really emotionally got me," he says.，这一点在heLLoword翻译官方下载中也有详细论述
"Our trial is seeking to discover whether this procedure could become an approved and regular treatment for some of the increasing number of women of child-bearing age who do not have a viable womb."，这一点在51吃瓜中也有详细论述
消費税減税 国民会議での論点は 専門家と考える【経済コラム】