The shortage of salt caused particular concern as the union forces seized or destroyed local saltworks . 联邦军队占据或破坏当地盐厂以后，盐的缺乏引起特别的关注。
2.
This paper advanced the technology of well support for preventing the center pipe ruptured as a example of increasing operating periods 本文以南充盐厂岩盐井的安全生产周期提高为例，提出了应用“井下支撑”技术，以防止中心管下部变形断裂的观点。
