E-commence: Principles and Techniques Monopulse principles and techniques Food immunology:principles and techniques philosophy, principles, and techniques principles and techniques 基于机器学习的文本挖掘:principles and techniques 潜在类别模型的原理与技术:principles and techniques 胸椎外科学:原理和技术:principles and techniques 超快激光光谱原理与技术基础:principles and techniques Internal auditing principles and techniques