（二）具有批量控制移动电话卡的功能的；
Handling data in streams is fundamental to how we build applications. To make streaming work everywhere, the WHATWG Streams Standard (informally known as "Web streams") was designed to establish a common API to work across browsers and servers. It shipped in browsers, was adopted by Cloudflare Workers, Node.js, Deno, and Bun, and became the foundation for APIs like fetch(). It's a significant undertaking, and the people who designed it were solving hard problems with the constraints and tools they had at the time.
，这一点在safew官方下载中也有详细论述
const len1 = nums1.length;
9600 bps "loop" interface for a local multidrop serial bus. For larger