It is high efficiency and save labor cost. It can finish 40 to 60 pieces of garment per hour.
免技术，高效率，节省人力，每人每小时可吹烫40-60件衣服；
It is saving cost that creates the wealth ultimately. Smith's principle that division of labor creates wealth is only one way to save cost.
节约成本是创造财富的根本原因，斯密的分工创造财富的原理仅是节约成本的方式。
Several Bridges can be monitored simultaneously by the cluster monitoring system of bridge, which can lower greatly the management cost and save the resource of labor force and material.
桥梁集群监测系统能够同时对辖区内多座桥梁的健康状态进行远程实时自动监测，极大地降低桥梁的管理费用，节约大量的人力和物力。
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