2. As an attributive R是所要测定的电阻。 R is the resistance to be measured 有许多问题要我们考虑。 There are many problems for us to consider. 这里有许多种类型的万用表供你选用。 Here are many types of multi-meters for you to choose from.2. As an attributive R是所要测定的电阻。 R is the resistance to be measured. 有许多问题要我们考虑。 There are many problems for us to consider. 这里有许多种类型的万用表供你选用。 Here are many types of multi-meters for you to choose from