该化油器结构比较复杂，检查和调整项目较多，难度大，与一般化油器有较大的区别。
Being complicated, the carburetor has more and difficult inspection and adjustment items compared with common carburetors.
大体积防水混凝土冬季施工是集大体积、防水、冬季施工为一体、难度非常大的混凝土施工项目。
Winter construction of mass waterproof concrete is a difficult concrete construction project, which comprised mass, waterproofing and winter construction.
海外项目钻机遣散和动员是一项复杂的系统工程，涉及的部门、人员和资料多，组织协调难度大。
Demobilization and mobilization of drilling rig of overseas project is complex system engineering, involving many departments and persons and information as well as hard organization and coordination.
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