采矿时，矿工们必须代号头盔。
1993年在南京汤山葫芦洞发现了2具人类头骨化石——南京1号头骨和南京2号头骨。
Two crania, Nanjing 1 and Nanjing 2, were found in a cave near Nanjing in 1993, and referred to as Homo erectus.
身上穿着一件褴褛的外衣，尺码足足大了两个号头。由于背包很重，外衣的领子被扯到一边。
My ragged coat was two sizes too big and the weight of my bag dragged the collar to one side.
在不同的温度条件下，测出三个不同批号头孢唑林钠样品的旋光度，求得温度系数K的数值。
Under different given temperature, optical rotations of the samples of cefazolin sodium of 3 different batch Numbers are measured. The values of the temperature coefficient K are calculated.
在不同的温度条件下，测出三个不同批号头孢唑林钠样品的旋光度，求得温度系数K的数值。
Under different given temperature, optical rotations of the samples of cefazolin sodium of 3 different batch Numbers are measured. The values of the temperature coefficient K are calculated.
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