把针穿过这种硬布料是不容易的。
It was difficult to work the needle through the stiff cloth.
矿石矿物主要有硬锰矿、软锰矿、褐锰矿、菱锰矿、钙菱锰矿等。脉石矿物主要有磁铁矿、针铁矿、黄铁矿等。
Ore minerals are composed of psilomelane, pyrolusite, braunite, rhodochrosite and manganocalcite and gangue minerals are composed of magnetite, goethite and pyrite and so on.
目的：观察皮肤针治疗丹毒局部皮肤硬肿的临床疗效。
Objective:To observe the clinical efficacy of cutaneous acupuncture in treating erysipelas with hard swollen skin.
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