×
模态框（Modal）标题
在这里添加一些文本
Close
Close
Submit
Cancel
Confirm
×
模态框（Modal）标题
×
Toggle navigation
Home
About
Journal Introduction
Editorial Board
Youth Academic Committee
Author Center
Permanent Column
Key Topic Selection
Submission Guidelines
Formats
Review Process
Copyright
Download
Reader Center
Open Access（OA）
Email Alert
Academic Forum
echnology Progress Forum
Youth Scholars Forum
Specialized Study Forum
Academic Services
Primary Empirical Research
Intermediate level empirical Research
Advanced Empirical Research
Subscription
Color sealed works
Contacts Us
中文
Study on Coal Enterprises Transformation Strategy Based on Barriers to Entry and Exit Analysis
Wang Linxiu,Guo Jin
SCIENCE & TECHNOLOGY PROGRESS AND POLICY . 2017, (
9
): 127 -131 . DOI: 10.6049/kjjbydc.2017GC0084
公众号订阅号企业微信客服