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- The virulence of four IBDV is different,isolates H 3,H 4 are more virulent than H 1,H 2 and they have the properties of making the Bursa of Faricius atrophy rapidly. 結果表明，各毒株毒力有一定差異，其中H3、H4株毒力高于H1、H2株，且有迅速致法氏囊萎縮的特性；
- The effects of the raw materials in the Ti(OC 4H 9) 4 MAPS system, including Ti(OC 4H 9) 4, MAPS, C 2H 5OH, H 2O, on the rule of the change of the polytitanosiloxane sol gel have been investigated. 研究了 Ti(OC4H9) 4-MAPS體系中 Ti(OC4H9) 4、MAPS、C2 H5 OH、H2 O 4個(gè)原料組分對聚鈦硅氧烷溶膠 -凝膠轉變規律的影響。
- Keywords Benzaldehyde glycol acetal H 4 SiW 12 O 40 -PAn Catalysis Acetalization; 苯甲醛乙二醇縮醛;硅鎢酸;聚苯胺;催化;縮醛反應;
- Visiting time in this hospital is from 4 to 6. 這家醫院的探望時(shí)間是從4點(diǎn)到6點(diǎn)。
- Let it be 4:25 tomorrow afternoon. 就定明天下午4點(diǎn)25分吧。
- A monthly is more economical than 4 weeklies. 一張月票比四張周票上算。
- He is remanded on his own recognizance of$4,000. 在保證付款4,000美元后他被還押(以后再出庭)。
- The doors were numbered 2,4, 6 and 8. 這些門(mén)編為2、 4、 6、 8號。
- We were routed out of our beds at 4 am. 清晨 4 點(diǎn)鐘就把我們從床上叫起來(lái)了。
- The next postal delivery is at 4 o'clock. 下一次郵遞時(shí)間是四點(diǎn)鐘。
- He was said to have salted away $4 million. 據說(shuō)他已積蓄了四百萬(wàn)美元。
- Subtract 3 from 7 and you have 4. 七減三得四。
- The champion is running in lane 4. 冠軍跑在第四跑道上。
- We can't get Channel 4 on our television. 我們的電視機收看不到第4頻道的節目。
- Our flight is boarding at gate number 4. 我們的航班在四號門(mén)登機。
- Unemployment declined to 4 percent last month. 上個(gè)月失業(yè)率降至百分之四。
- How do you pronounce p - h - l - e - g - m ? 你怎樣讀“p-h-l-e-g-m”這個(gè)單詞?
- The going rate for the job is￡4 per hour. 這種工作的現行工資是每小時(shí)四英鎊。
- Letter "O" stands for oxygen and "H" for hydrogen. 字母“O”代表氧，“H”代表氫。
- Codex Committee on Food H hygiene. 國際食品衛生規范委員會(huì )。
