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- Introduction of metal impurity into TiO_2 to improve the photocatalytic activity of TiO_2 has been studied widely. 在二氧化鈦中引入金屬雜質(zhì)以提高二氧化鈦的光催化活性受到人們的廣泛研究。
- Advanced manufacturing processes are applied and the content of metal impurity is rigorously controlled.The oxidant is reduced to the minimum extent in each manufacturing process. 采用先進(jìn)制程并嚴格控制金屬雜質(zhì)的含量，并在每一制程中將氧化物降至最低程度。
- Scientists have studied the migration of fish over long distances. 科學(xué)家研究過(guò)魚(yú)類(lèi)遠距離回游的現象。
- This is a kind of metallic paint. 這是一種有金屬光澤的涂料。
- The aeroplane wing showed signs of metal fatigue. 機翼顯出有金屬疲勞的現象。
- There has been a migration of people from the country to the towns. 人們從鄉下移居城鎮。
- The frame of the umbrella is made of metal. 傘的骨架是金屬制的。
- There was a huge migration of people into Europe because of the war. 因為戰爭，大量的移民涌入歐洲。
- FAAS method was applied to the determination of metal impurities(in eluding Zn,Na,Pb,K, Fe,Ca and Mg)in high purity lithium carbonate. 采用火焰原子吸收光譜法測定了高純碳酸鋰中多種雜質(zhì)元素(包括鋅、鈉、鉛、鉀、鐵、鈣及鎂)的含量。
- A coating of metal sheets or plates. 金屬板的外覆金屬片或金屬板的外覆
- He shook a sheet of metal to simulate the noise of thunder. 他搖動(dòng)一塊金屬薄片來(lái)模擬雷聲。
- The seasonal migration of birds. 鳥(niǎo)類(lèi)的季節性遷移。
- Promoting orderly migration of people. 26、促進(jìn)人口有序遷移和流動(dòng)。
- A thin sheet of metal, especially of tin. 錫鐵片薄金屬塊，尤指錫
- They cut holes on the sheet of metal with a punch press. 他們用沖床在金屬板上打孔。
- Movement of Metallic Impurity Particles in Aluminum Melt in Steady Magnetic Field 鋁熔體中金屬雜質(zhì)顆粒在穩恒磁場(chǎng)中的運動(dòng)狀態(tài)
- There has been a migration of people from the country to the town. 人們從鄉下移居城鎮。
- Determination of metallic impurity content in zinc oxide by atomic absorption spectrometry 原子吸收法測定氧化鋅中金屬雜質(zhì)含量
- A large drinking bowl or goblet made of metal or hard wood. 大酒碗用金屬或硬木做成的大酒碗或酒杯
- The workman flattened a piece of metal by hammering it. 工匠將一塊金屬錘平。
