机电专业英语unit 2
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短语a wide range of：范围广泛的 cam shafts：凸轮轴 crank shafts：曲柄轴 bearing caps：轴承盖 cylinder heads：汽缸盖。
[5] The hard brittle white cast iron surface is desirable in those instances where a material with extreme abrasion resistance is required.
desirable：adj.理想的，可取的where引导定语从句，修饰those instances。 extreme abrasion resistance：极端的耐磨性。
Notes （课文注释）
[1] All metals which contain iron (Fe) are known as ferrous materials. 短语be known as：称为，叫做。which引导定语从句。
翻译：所有含有铁的金属称为铁类材料。
[2] The extensive use of cast iron and steel workpiece materials, can be attributed to the fact that iron is one of the most frequently occurring elements in nature. 短语be attributed to：归因于。that引导同位语从句， iron is one of the most frequently occurring elements in nature即是fact的内容。
automotive engine blocks：汽车发动机组 cylinder heads：汽缸盖 valve bodies：阀体 heavy equipment oil pans：重型设备油盘 machine bases：机械的基本部件。
翻译：它常用于制造汽车发动机组，汽缸盖，阀体， 支管，重型设备油盘和机械的基本部件。
翻译：在需要极其耐磨损的材料时，坚硬易碎的白口 铸铁是理想之选。
[6] Nodular or ductile iron is used to manufacture a wide range of automotive engine components including cam shafts, crank shafts, bearing caps and cylinder heads.
翻译：由于铁是大自然中最为常见的元素之一，铸 铁和钢作为工件材料应用很广泛。
[3] Cast iron is an iron carbon mixture which is generally used to pour sand castings, as opposed to making billets or bar stock. 短语as opposed to：相对于。which引导定语从句，修饰 iron carbon mixture。
翻译：铸铁是一种铁碳混合物，较多用于浇铸砂模铸 件，而不是建房屋或作棒料。
[4] This material is often used for automotive engine blocks, cylinder heads, valve bodies, manifolds, heavy equipment oil pans and machine bases.
Materials（阅读材料）
New Words and Phrases （生词和短语）
a)
b)
c) d) e) f) g) h) i) j) k) l)
cast iron 铸铁 gray cast iron 灰铸铁 white cast iron 白口铸铁 malleable cast iron 可锻铸铁 nodular cast iron 球墨铸铁 ferrous [5ferEs] adj. 铁的，含铁的 pig iron 生铁 wrought iron 熟铁，锻铁 carbon [5kB:bEn] n.碳 alloy [5AlCi] n. 合金。【例】alloys steels: 合金钢 extensive [iks5tensiv] adj. 广泛的 mixture [5mikstFE] n.. 混合物
m) n) o) p) q) r) s)
t)
u) v)
ቤተ መጻሕፍቲ ባይዱ
w)
x) y) z)
casting [5kB:stiN] n. 铸造 billet [5bilit] n. 钢坯 automotive [C:tE5mEtiv] n. 汽车 intricate [5intrikit] adj. 复杂的，错综的intricate molds 复杂模具 manifold [5mAnEfEuld] n. 支管 versatile [5vE:sEtail] adj. 多才多艺的 cementite [si5mentait] n. 渗碳 substance [5sQbstEns] n. 物质，实体 ductile [5dQktEl, -tail] adj. 柔韧的 machinable [mE5Fi:nEbl] adj. 有延展性的，可锻的 machined加工 brittle [5britl] adj. 脆的，易碎的 anneal [E5ni:l] n. 退火 component [kEm5pEnEnt] n. 组件 cylinder [5silindE] n. 汽缸
UNIT two Engineering Materials
Text 1
Cast Iron
Steel
Text 2
Text 3
Materials Selection Grammars（语法）
Text 4
TEXT 1 Cast Iron
New
Words and Phrases（生词和短语）
Notes（课文注释） Reading
[5] The hard brittle white cast iron surface is desirable in those instances where a material with extreme abrasion resistance is required.
desirable：adj.理想的，可取的where引导定语从句，修饰those instances。 extreme abrasion resistance：极端的耐磨性。
Notes （课文注释）
[1] All metals which contain iron (Fe) are known as ferrous materials. 短语be known as：称为，叫做。which引导定语从句。
翻译：所有含有铁的金属称为铁类材料。
[2] The extensive use of cast iron and steel workpiece materials, can be attributed to the fact that iron is one of the most frequently occurring elements in nature. 短语be attributed to：归因于。that引导同位语从句， iron is one of the most frequently occurring elements in nature即是fact的内容。
automotive engine blocks：汽车发动机组 cylinder heads：汽缸盖 valve bodies：阀体 heavy equipment oil pans：重型设备油盘 machine bases：机械的基本部件。
翻译：它常用于制造汽车发动机组，汽缸盖，阀体， 支管，重型设备油盘和机械的基本部件。
翻译：在需要极其耐磨损的材料时，坚硬易碎的白口 铸铁是理想之选。
[6] Nodular or ductile iron is used to manufacture a wide range of automotive engine components including cam shafts, crank shafts, bearing caps and cylinder heads.
翻译：由于铁是大自然中最为常见的元素之一，铸 铁和钢作为工件材料应用很广泛。
[3] Cast iron is an iron carbon mixture which is generally used to pour sand castings, as opposed to making billets or bar stock. 短语as opposed to：相对于。which引导定语从句，修饰 iron carbon mixture。
翻译：铸铁是一种铁碳混合物，较多用于浇铸砂模铸 件，而不是建房屋或作棒料。
[4] This material is often used for automotive engine blocks, cylinder heads, valve bodies, manifolds, heavy equipment oil pans and machine bases.
Materials（阅读材料）
New Words and Phrases （生词和短语）
a)
b)
c) d) e) f) g) h) i) j) k) l)
cast iron 铸铁 gray cast iron 灰铸铁 white cast iron 白口铸铁 malleable cast iron 可锻铸铁 nodular cast iron 球墨铸铁 ferrous [5ferEs] adj. 铁的，含铁的 pig iron 生铁 wrought iron 熟铁，锻铁 carbon [5kB:bEn] n.碳 alloy [5AlCi] n. 合金。【例】alloys steels: 合金钢 extensive [iks5tensiv] adj. 广泛的 mixture [5mikstFE] n.. 混合物
m) n) o) p) q) r) s)
t)
u) v)
ቤተ መጻሕፍቲ ባይዱ
w)
x) y) z)
casting [5kB:stiN] n. 铸造 billet [5bilit] n. 钢坯 automotive [C:tE5mEtiv] n. 汽车 intricate [5intrikit] adj. 复杂的，错综的intricate molds 复杂模具 manifold [5mAnEfEuld] n. 支管 versatile [5vE:sEtail] adj. 多才多艺的 cementite [si5mentait] n. 渗碳 substance [5sQbstEns] n. 物质，实体 ductile [5dQktEl, -tail] adj. 柔韧的 machinable [mE5Fi:nEbl] adj. 有延展性的，可锻的 machined加工 brittle [5britl] adj. 脆的，易碎的 anneal [E5ni:l] n. 退火 component [kEm5pEnEnt] n. 组件 cylinder [5silindE] n. 汽缸
UNIT two Engineering Materials
Text 1
Cast Iron
Steel
Text 2
Text 3
Materials Selection Grammars（语法）
Text 4
TEXT 1 Cast Iron
New
Words and Phrases（生词和短语）
Notes（课文注释） Reading