请英语高手帮忙详细分析（这段中共2句话）。

来源：百度知道 编辑：UC知道 时间：2024/05/27 19:37:10
However, these “dedicated” circuit-switching techniques were expensive and wasted available communications capacity—the circuit would be maintained regardless of whether any data was being sent. For nearly 70% of the time, a dedicated voice circuit is not being fully used because of pauses between words and delays in assembling the circuit segments, both of which increased the length of time required to find and connect circuits. A better technology was needed.
这段共2句话，请详细分析2句的句子成分，经典词汇的用法，含有什么从句，主谓宾等。能多详细就多详细，谢谢大家！！！！

本段有三句话。

第一句话的主语是these "dedicated" circuit-switching techniques,而and连接两个小分句，其中第一个是系表结构，were是系动词；第二个中wasted是谓语，available communications capacity是宾语。the circuit would be maintained regardless of whether any data was being sent.中的the circuit对整个第一句来说可以看成是开头主语的同位语，对主语进行补充说明。这一小句中would be maintained是这小句的谓语,regardless of whether any data was being sent.是一个状语从句。

第二句话中a dedicated voice circuit是主语，is not being fully used 是谓语，because of pauses between words and delays in assembling the circuit segments, both of which increased the length of time required to find and connect circuits是状语部分。

A better technology was needed. 是第三句话，a better technology是主语，was needed是谓语，此句是主谓结构，没有宾语。