In this paper, we analysis the current situation of land use in Shijiazhuang proper, and suggest using politics, Law and economic lever, using extension and intension increasing land use.
通过石家庄市城区用地现状分析，提出利用政策法规和经济杠杆，采取外延扩大和内涵扩大相结合的用地对策。
2
Electronic scale weighing instrument, belonging to a, is the use of Hooke's law or the force of the lever balance principle to measure quality tools.
电子秤，属于衡器的一种，是利用胡克定律或力的杠杆平衡原理测定物体质量的工具。
3
While using lever rule, the fundamental lawof phase diagram and use of standard terminology must be followed.