Under the law in Massachusetts, tobacco companies have to measure the nicotine content of every type of cigarette and report the results.
根据马萨诸塞州的法律，烟草公司必须测量每种香烟的尼古丁含量并报告结果。
2
Before this was discovered, engineers had already built instruments to exploit the principle, for example to measure the depth of the sea under a ship.
在这个原理被发现之前，工程师们已经制造了利用这个原理的仪器，例如测量船下的海洋深度。
3
If using a bioelectrical impedance scale, be sure to measureunder the same circumstances each time. Hydration, food intake and skin temperature can affect body fat measurements.