be composed of造句

• Water is composed of hydrogen and oxygen .
  水由氢与氧化合而成。
• Nuclei are composed of protons and neutrons .
  原子核是由质子和中子构成的。
• Water is composed of hydrogen and oxygen .
  水是由氢和氧组成。
• Water is composed of the elements hydrogen and oxygen .
  水是由氢、氧元素组成的。
• This tissue is composed of stellate reticular cells .
  此组织由星形的网状细胞组成。
• Each disaccharide is composed of two monosaccharides .
  每一种双糖都是由两个单糖组成。
• Gunpowder is composed of sulfur, carbon, and potassium nitrate .
  火药是由硫、碳和硝酸钾组成。
• A polysaccharide is composed of three or more monosaccharides .
  多糖是由三个以上的单糖所组成的。
• Each element is composed of identical atoms of a single kind .
  每种元素由单一种类的相同原子组成。
• A trimetrogon strip is composed of three rows of overlapping .
  三镜头摄影航线为三排重迭的象片所组成。
• Biological membranes are composed of two layers of phospholipid molecules .
  生物膜由两层D磷脂分子组成。
• The arachnoid is composed of connective tissue devoid of blood vessels .
  蛛网膜是由无血管的结缔组织所构成。
• It may be composed of allelochemics such as alkaloids or terpenes .
  它可以由异种化合物例如生物碱或萜稀组成。
• The choroid plexus is composed of loose connective tissue of the pia mater .
  脉络丝由软脑膜的疏松结缔组织构成。
• The dermis is composed of the connective tissue that supports the epidermis .
  真皮是由支撑表皮的结蒂组织构成的。
• The life system is composed of a subject population and its effective environment .
  生命系统由主体种群和它的有效环境所组成。
• The van allen belts are composed of charged particles trapped by the earth's magnetic field .
  范阿伦带由地球磁场俘获的带电粒子所组成。
• This strip is composed of an intumescent material which swells when subjected to fire .
  这种狭条是用受到燃烧时发生膨胀的热胀材料组成的。
• The "shell" is composed of three structures: the membranes, the mineralized part and the cuticle .
  蛋壳由3种结构组成：膜，矿物质化部分和壳胶膜。