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- It' s hard finding time to study ( the subject ). 很難找出時(shí)間來(lái)學(xué)習（這門(mén)學(xué)問(wèn)）.
- It' s hard to define exactly what has changed. 很難解釋清楚到底發(fā)生了什麼變化.
- IT'S hard to fininsh this task in less than a week. 要在不到一周的時(shí)間內完成這項工作，是件困難的事情。
- The Vickers hardness number is indicated by HV ( formerly, DPH ). 維氏硬度用HV表示（之間寫(xiě)作DPH）。
- It’s hard to say go out there and play a game offensively. 很難說(shuō)讓他們上場(chǎng)去打出一場(chǎng)美妙的進(jìn)攻。
- Hard-nesses are Brinell Hardness Numbers. 硬度是布氏硬度.
- It' s hard to readjust ( oneself ) to life in Britain after working abroad. 在國外工作之後; 很難重新適應英國的生活.
- The Brinell hardness number of the hot rolled plates varies with measurement on the different batch of the products. 通過(guò)對熱軋中厚板在不同深度上進(jìn)行布氏硬度的測定 ,表明測量深度對硬度的明顯的影響 ,并指出獲得穩定值的必要性。
- Teacher Judy Garber says it”s hard to get the kids away from the computers. 加利福尼亞圣卡洛斯的阿讓代爾小學(xué)可以說(shuō)是美國最先進(jìn)的在線(xiàn)學(xué)校。
- Eath time a new axis of tavel is used, the robot’s hard stops must be changed. 每當要用到一個(gè)新的行程路徑時(shí)，自動(dòng)裝置必須改變硬機械。
- The hardness number is then read on a dial on the machine. The rockwell test is very quick, and is suitable for mass inspection of parts. 然后在硬度計的刻度盤(pán)上讀出硬度數值。洛氏硬度計測試非?？旖?，并且適用于部件的成批檢驗。
- The twi are so much alike that it‘s hard to distinguish between them. 兩個(gè)又胞胎如此相似，以至于很難區分他們。
- With the hectic pace of life these days, it’s hard to find a moment of peace. 現代生活繁忙的節奏中，要找到一個(gè)平和的時(shí)刻也是很困難的。
- The Brindle hardness number (HB, formerly BHN) is defined as the ratio of the load P to the curved surface area of the indentation. 布氏硬度值（HB,之前寫(xiě)作BHN）按照加載物在凹口的曲面區域的比值來(lái)定義。
- The piece of cap is made from high heat-resistant material with good heat capacity, and Brinell hardness number in 180 to 135. 帽件由有良好熱容的高耐熱材料制成，且材料的布里涅爾硬度指數在180到135之間。
- Use this utility to copy DOS and NetWare drivers to your computer’s hard disk. 第二章講述8098單片機的基本結構，包括硬件和軟件的組成；第三章講述中央處理器的基本概念；
- It' s hard to keep track of ( ie maintain contact with ) all one' s old school friends. 與中學(xué)時(shí)的所有老校友都保持聯(lián)系是很困難的.
- The results might explain why it" s hard to tickle yourself, scientists said today. 而這一結論也就能對為什么人們胳肢自己時(shí)感覺(jué)不到癢的現象做出解釋。
- It' s hard to choose between the two candidates : they' re both much of a muchness. 很難在這兩個(gè)候選人中作選擇; 他們倆不分上下.
