四级;
英文例句/中文翻译:
Probe into Four-stage Teaching Programme Mode
四段程序教学模式的探索
According to a four-stage risk capital and debt maturity, determines the possible modes of financing and capital costs.
据四个阶段的风险资本和债务期限,确定了可能的方式,资金筹措和资本成本。
Study on Increasing Production Property of Four-stage Seed Stock on Sweet Potato
甘薯四级种薯增产性能研究