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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 ). 很難找出時間來學習（這門學問）.
- It' s hard to define exactly what has changed. 很難解釋清楚到底發生了什麽變化.
- IT'S hard to fininsh this task in less than a week. 要在不到一周的時間內完成這項工作，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. 很難說讓他們上場去打出一場美妙的進攻。
- No abnormity was found in the metallographi cal analysis and hardness test. 金相和硬度分析未發現明顯異常組織和硬度分佈。
- Scratch Hardness Test Using a Diamond Stylus on the Micro-Tribometer mod. 便條硬度試驗用鑽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. 我通過了綠色通道英語口語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. 加利福尼亞聖卡洛斯的阿讓代爾小學可以說是美國最先進的在線學校。
- Eath time a new axis of tavel is used, the robot』s hard stops must be changed. 每當要用到一個新的行程路徑時，自動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. 兩個又胞胎如此相似，以至於很難區分他們。
- 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，要找到一個平和的時刻也是很困難的。
- 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，包括硬體和軟體的組成；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. 通過成分分析（EPMA）和硬度測試， 分析了硅擴散層的特徵。
- The aging process of mullite short fibre reinforced ZL109 composites was studied via hardness test. 通過測試硬度的方法，對莫來石短纖維增強ZL109複合材料的時效析出行為進行了研究。
- The advantage of hardness test is fast, inexpensive and relatively nondestructive, leaving only a small indentation in the material. 硬度測試的優點是快，便宜，並且比較不具破壞性，只在材料上留下小小的壓痕。
