Standard addition method and internal standard method
内标标准加入法
standard of aroma type and standard sample
标准和标样
cone in cone
套锥
迭锥
叠锥
cone in cone structure
叠锥构造
cone in cone volcano
叠锥火山
cone-in-cone
叠锥
套锥
迭锥
LowerRoller Cone BitRoller Cone Biting Cost
降低成本
outer cone ring in a double cone synchronizer
双锥外锥环
sense cone or sense peg sense cone
神经锥
Li is an important theory category in Carving the Dragon .There are lots of Li in Carving the Dragon and they are standard of measuring writers and work.The article illumistrates by the way of writers