A sketch of his apparatus is shown in figure 3-2 . 圖3-2是他的實驗儀器的簡圖。
The imperfections of the instrument increase this value . 儀器的缺點又加大了這個數(shù)值。
The magnetic cores of transformers and other apparatus are laminated . 把變壓器及其它儀器的磁心分層。
When a shock came it shook the rigid table upon which devices placed . 當(dāng)震動到達時,就震動了這張上面放著儀器的堅硬桌子。
The performance of these instruments is quite different from that of those used to date . 這些儀器的性能和迄今所使用的完全不同。
The apparatus thus described , however , records only the horizontal component of the wave movement . 然而,儀器的如此描畫只能記錄波運動中的水平方面的部分。
A strong earthquake near the instrument will usually displace the reading off scale or may even damage the instrument . 如果在這類儀器的附近發(fā)生一次強烈的地震,一般就會使記錄出格,甚至可能損壞儀器。
The division into four frequency ranges was made to correspond with typical frequency limits on four different types of recording instruments . 分成4個頻率范圍是為了與4種不同類型記錄儀器的典型頻率限度相適應(yīng)。
The engineer requires a rugged device that will accurately record the heaviest shocks in the near vicinity of the instrument . 工程師所需要的儀器應(yīng)該有結(jié)實的裝置,即使在儀器的附近發(fā)生最強烈的振動時,也能夠把它精確地記錄下來。
The apparatus thus described , however , records only the horizontal component of the wave movement , which is , in fact , much more complicated . 然而,儀器的如此描畫只能記錄波運動中的水平方面的運動部分,而波運動實際情況復(fù)雜得多。