Web streams use a locking model to prevent multiple consumers from interleaving reads. When you call getReader(), the stream becomes locked. While locked, nothing else can read from the stream directly, pipe it, or even cancel it – only the code that is actually holding the reader can.
产业“家底”更加厚实。粮食产量连续两年稳定在1.4万亿斤以上，制造业增加值连续16年稳居世界首位，工业增加值对经济增长的贡献率升至35%，服务业增加值占国内生产总值（GDP）的比重增至57.7%。，这一点在新收录的资料中也有详细论述
。新收录的资料是该领域的重要参考
7SETTINGS optimize_aggregation_in_order = 1;，更多细节参见新收录的资料
We were heavily inspired by Stellafane's Guide