1·The high quality service is depends on the design and management, but the service design is sophisticated than product design because intangibility, inseparability, variability, perishability.
高品质的服务要靠设计和管理，但服务的无形性、不可分割性、易变性和易逝性都说明服务设计比产品设计更为复杂。
2·Such evidence, however, characterized by its virtuality, intangibility, etc., does frequently incur doubt of its authenticity and reliability since it may be deleted or altered easily.
但是具有虚拟性、无形性等特点的电子证据，往往因其极易删除和修改而使人对其在诉讼中作为证据是否真实可靠心存疑虑。
3·Higher product has the basic characteristics of intangibility, sociality and diversity of the consumer object.
高等学校产品具有无形性、社会性及消费对象多元性的基本特征。