The competition in their personal mapping equipment operating skills, four leveling, traversing the contents of such skills as the main competition.
本次大赛以个人测绘仪器操作技能、四等水准测量、导线测量等技能为主要竞赛内容。
Equipped with four hydraulic level of support, quickly leveling rig is simple, safe and reliable.
装有四个液压水平支撑，可迅速调平钻机，操作简便，安全可靠。
Leveling jacks, located at the four corners of the main frame, are controlled from the operator's cab.
位于主机架四角的调平千斤顶是从操作室控制的。
Although heart disease death rates have been falling in the U. S. for four decades, they are now leveling off for young men and women.
虽然美国心脏病死亡率四十年来一直下降，但是年轻男性和女性的心脏病死亡率的下降趋势正在慢慢停下来。
Although heart disease death rates have been falling in the U. S. for four decades, they are now leveling off for young men and women.
虽然美国心脏病死亡率四十年来一直下降，但是年轻男性和女性的心脏病死亡率的下降趋势正在慢慢停下来。
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