后面会谈到资金管理，你会学到如何控制风险，使账户只有很小比例的风险。
Later, in the section on money management, you'll learn to limit your risk on any trade to a tiny percentage of your account.
只有很小比例的增长代表了自然原料吨位的增长—例如油、煤、矿石，木材和未加工的化学制品。
Only a small fraction of that represents growth in the tonnage of physical materials- oil, coal, ores, wood , and raw chemicals, for example.
虽然这些传统的宽光谱光源可以产生很多的所需波长，但是在特定的应用里，这些光源发出的光只有很小比例的光是有用的。
Although such broad spectrum lamps can generate ample light at desired wavelengths, only a small percentage of the projected light is useful in any particular application.
应用推荐