2. A one-way valve can also be
constituted as a compound valve with other control valves.
单向阀还可与其他控制阀组成复合阀,也被广泛地用于液压系统中。
3. After 1500, with the conversion of economic technique and history space, the world history
constituted globalization language with its particular way.
1500年以后,凭借经济技术与历史空间的转换,世界历史以其特定的方式,构成了全球化语境。