如何测定原子的重量和体积是我们很多人感兴 趣的一个问题。 How to determine the weight and size of an atom is a question interesting to many of us. 必须作出决定到底选用那一项。 The decision on which term to choose must be made 读者可能不知道该首先做这些运算中的那一个。 The reader may have no idea which of these operations to do first. 我们得求出使x为多大才能使这个等式成立。 We have to find out how large to make x for this equation to hold如何测定原子的重量和体积是我们很多人感兴 趣的一个问题。 How to determine the weight and size of an atom is a question interesting to many of us. 必须作出决定到底选用那一项。 The decision on which term to choose must be made. 读者可能不知道该首先做这些运算中的那一个。 The reader may have no idea which of these operations to do first. 我们得求出使x为多大才能使这个等式成立。 We have to find out how large to make x for this equation to hold