焊条及焊丝的化学成分及机械性能应同母材的等级相同或更高。
Welding electrodes and wires shall have chemical compositions and mechanical properties equal to or of higher grade than the base material.
SIL2和SIL3是机械和过程安全应用中要求的最普遍安全完整性等级，使得GuardLogix控制器成为众多安全应用的理想选择。
SIL 2 and SIL 3 are the most common safety integrity levels required in machine and process safety applications, making the GuardLogix controller ideal for a wide range of safety applications.
可以根据各种化学和机械条件，定制各种性能等级的产品。
It can be tailored to withstand various chemical and mechanical conditions to provide you with performance at every level.
然而，高等级公路的养护机械至今仍然依赖进口，普通公路养护的资金匮乏。
However most of the maintenance machinery of the superhighway are still imported, and the fund of the common road maintenance is lacking so far.
阐述了公路机械化养护的目的与作用，对目前我国高等级公路的机械化养护现状及管理模式进行了分析。
This paper expounds the purposes and functions of highway maintenance mechanization, analyzes the status quo of highway maintenance mechanization in China and management pattern.
沥青路面具有力学强度好、行车平稳、低噪音及易于机械化施工等优点，已成为我国高等级公路的主要路面结构形式。
Asphalt pavement with advantages of good mechanical strength, smooth ride, low noise and ease of construction of the mechanization, has become China's main highway pavement structure.
沥青路面具有力学强度好、行车平稳、低噪音及易于机械化施工等优点，已成为我国高等级公路的主要路面结构形式。
Asphalt pavement with advantages of good mechanical strength, smooth ride, low noise and ease of construction of the mechanization, has become China's main highway pavement structure.
应用推荐