第二个重要的阶段，以itunes和iPod为特征，即苹果公司创建一项专门的服务，通过这种服务，苹果公司的iPod玩家可以购买个性化的歌曲，而这种歌曲的格式是专门为他们设计的，也就是只能用于iPod。
The second big phase was characterized by iTunes and the iPod, as Apple created a service focused on buying individual songs in a proprietary format designed for Apple's iPod players.
针对模块化设计的产品配置阶段，提出了基于模块族特征参数模型的模块配置集生成流程。
For the phase of product configuration in modular design, a process of product module configuration set is put forward based on the feature parameter model of module family.
方法取11~36周人胎肺组织常规石蜡包埋切片，HE染色观察胚肺各个发育阶段的成熟度，免疫组化检测SP-D时相性表达特征。
Methods Human fetal lung tissues from 11- to 36-week-old fetuses were assayed for lung maturity with HE staining and SP-D expression by means of immunohistochemistry.
但是我国教育研究者对小学教师的专业和专业化的特征的研究还处于起步阶段。
But primary school teachers of Chinese education researchers on the characteristics of professional and specialized research is still in its initial stage.
元素组合也对应于不同的矿化阶段，指示金的成矿活动及特征。
These assemblages are also related to different mineralization stages, revealing gold metallogenic processes and corresponding features.
一元化特征建模技术融特征设计和特征识别两者为一体，设计阶段的初始设计特征进入应用领域后，经过特征识别器形成领域专用特征。
Unified feature modelling technique is a hybrid of feature based design and feature recognition. In design stage, a part is described by initial features with four information models.
在社会转型时期，城市化进程中群体资源的流动和重组导致了城市弱势群体的产生及严重状况；经济地位和社会地位的长期低下是此类人群在现阶段的基本特征。
In time of social transfer, the flow and recombination of the colony resources in the course of urbanization has led to the formation of urban puny colony and its deteriorating situation.
虚拟医院是数字化医院高级阶段的重要特征和高附加值产品，是实现区域协同医疗的基础。
Virtual hospital is the important characteristic and high value-added product made from high grade digital hospital, it is the basis to realize regional collaborative medical care.
非制度化参与、非均衡状态等是现阶段中国农村村民公共参与的共同特征。
The main forms of villagers'public participation in the current rural area of China;
结果表明：当代大学新生在高中阶段参加体育锻炼以得到快乐为首要目的，呈现出多元化的特征，并初步形成了现代多维的健康观念；高中阶段根据运动兴趣参加体育锻炼，并有较高的频度；
The results indicate:For the freshmen in this modern time, their aim to take part in sports activity is to gain happiness when they were high school students whose characteristics are diversified;
结果表明：当代大学新生在高中阶段参加体育锻炼以得到快乐为首要目的，呈现出多元化的特征，并初步形成了现代多维的健康观念；高中阶段根据运动兴趣参加体育锻炼，并有较高的频度；
The results indicate:For the freshmen in this modern time, their aim to take part in sports activity is to gain happiness when they were high school students whose characteristics are diversified;
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