例句與造句

1. The effect of compound casting technology and compound modification on the properties of high speed steel roll collar was studied . the results showed that compound high speed steel roll collar with high and even hardness and good bond between outer and inner layers could be gained when the modified colbalt free high speed steel in outer layer and nodular iron inner layer in connection with appropriate rotational speed of centrifugal machine , pertinent pouring interval between two kinds of the melt and moderate pouring temperature as well as surface induction heat treatment were chosen . it is indicated in industrial use that the service life of compound roll collar is higher by 5 times than that of high chromium cast iron collar
   研究了離心復(fù)合鑄造工藝和復(fù)合變質(zhì)處理對(duì)高速鋼輥環(huán)性能的影響，結(jié)果表明，選用變質(zhì)高碳無鈷高速鋼作外層，用球鐵作內(nèi)層，選擇合適的離心機(jī)轉(zhuǎn)速、兩種金屬熔液澆注間隔時(shí)間和澆注溫度，結(jié)合采用表面感應(yīng)熱處理工藝，可獲得硬度高、均勻性好、內(nèi)外層結(jié)合良好的高速鋼復(fù)合輥環(huán)，用于工業(yè)生產(chǎn)其使用壽命比高鉻鑄鐵輥環(huán)提高5倍以上。
2. It's difficult to find surface induction in a sentence. 用surface induction造句挺難的