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- The characteristic of knoop hardness test method for metallic materials are introduced. 文章介紹了布氏硬度試驗中測量結果的不確定度評定方法。
- 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。
- This is a hard test in which the class all make low scores. 這是一次較難的測試,班上所有的學(xué)生都得了較低的分數。
- 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。
- No abnormity was found in the metallographi cal analysis and hardness test. 金相和硬度分析未發(fā)現明顯異常組織和硬度分布。
- Scratch Hardness Test Using a Diamond Stylus on the Micro-Tribometer mod. 便條硬度試驗用鉆石筆在微摩擦國防部。
- 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.
- We passed the GESE band 4 and we will welcome the new and hard test. 我通過(guò)了綠色通道英語(yǔ)口語(yǔ)4級的考試，我們還要迎接新的難的考試。
- 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。
- Method of measurement uncertainty evaluation for Brinell hardness test results was introduced in the present work. 文章介紹了布氏硬度試驗中測量結果的不確定度評定方法。
- 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。
- 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；
- The results of the hardness test prove the effect ot secondary hardening in cau- sed by forming M_(23)C_6 carbides. 高溫硬度試驗證明二次硬化效果是由 M_(23)C_6碳化物形成引起的。
- The characteristics of so-called silicon diffusion layer were analyzed through EPMA and hardness test. 通過(guò)成分分析（EPMA）和硬度測試， 分析了硅擴散層的特征。
- The aging process of mullite short fibre reinforced ZL109 composites was studied via hardness test. 通過(guò)測試硬度的方法，對莫來(lái)石短纖維增強ZL109復合材料的時(shí)效析出行為進(jìn)行了研究。
- The advantage of hardness test is fast, inexpensive and relatively nondestructive, leaving only a small indentation in the material. 硬度測試的優(yōu)點(diǎn)是快，便宜，并且比較不具破壞性，只在材料上留下小小的壓痕。
