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- Add 25 ppb Bentonite and allow to hydrate for a minimum of 6 hrs. 按每桶鉆井液加25磅的膨潤土，允許水化至少6個(gè)小時(shí)。
- All drill water to be pretreated with 2 ppb Gluteraldehyde. 所有的鉆井水都要按每桶加兩磅的戊二醛作預處理。
- The detection limit for surface waters is 0.05 ppb U . 檢出下限為0.;05ppb;
- For ISSR marker, 34 polymorphic bands were generated, PPB were 53.0%. ISSR引物共擴增到34條清晰的多態(tài)性條帶，多態(tài)性條帶比率為53.;0%25。
- In original English language for the 1st impression.The Net Price to the Publisher is at the ratio 1.6 of the PPB cost. 原書(shū)第一次印刷的文字形式是英文。出版者支付的凈價(jià)依據PPB成本1.;6的比率計算。
- Of these bands, 114 were polymorphic, and the percentage of polymorphic bands (PPB) was 95.00%. 其中，多態(tài)性譜帶114條，多態(tài)性帶百分率(PPB)為95.;00%25。
- The content of aflatoxin Bl in the contaminated fodder was rather high with an amount of 475 ppb. 飼料中黃曲霉素素B_1含量相當高,達475ppb。
- The method has been successfully used for determination of co balt at the ppb level in authentic samples . 用2mL 1mol/L的HClO_4溶液淋洗鈷亞硝基R鹽的絡(luò )合物直接進(jìn)行比色測定,可以測定ppb級的痕量鈷,并成功地將該方法應用于試樣分析。
- For RAPD markers, 85 polymorphic bands were produced, percentage of polymorphic bands (PPB) were 69.4%. RAPD引物共擴增到85條清晰的多態(tài)性條帶，多態(tài)性條帶比率為69.;4%25。
- Bromate is suspected of posing one of the highest cancer risks of any DBP. The MCL for bromate is only 10 ppb. 而作為一種替代品，臭氧消毒逐漸被大家所采用。但是雖然臭氧自身不會(huì )產(chǎn)生可惡的副產(chǎn)品，但是它卻會(huì )參與副產(chǎn)品的形成，那就是溴酸鹽。
- This supports the use of 50 ppb as the melamine concentration in the scenarios below. 這種支持使用50濃度的三聚氰胺集中在以下情景。
- Sulfinert coating provides stable storage of sulfur and mercury at ppb levels in petroleum samples. 硫鈍化的涂層為采樣罐提供了穩定的性能，可以?xún)Υ鍼PB級的含硫樣品。
- For the purpose of this assessment it is assumed that all edible tissues contain 50 ppb melamine. 為了這次評估是假定所有可食組織中含有50濃度三聚氰胺。
- FSIS Western laboratory repeated analysis and reported at the Level of Detection for the Western Laboratory of 50 ppb. 西方安全檢驗局實(shí)驗室反復分析和報告水平的檢測實(shí)驗室西部50濃度。
- Concentration of cobalt in running water of Guangzhou as well as Zhongshan Uni-versity were 2.0 PPb,in Pearl River water was 3.8 PPb. 前兩者含鈷量均為2.;0PPb;后者含鈷量為3
- At the end of 3 min of PPB, the anti-G suit of had the best compensatory effect and lower-abdomen bladder come next to it. 從加壓呼吸3mln末的代償效果看:抗荷服的代償效果最好;
- When the counting time of PMT is 10 seconds, the ratio between the concentration of NO (PPB) and the counting rate (CPS) is 1:5. 當計數門(mén)為10秒的時(shí)候，NO標氣濃度(PPB)與計數率(CPS)的對應關(guān)系是：1：5；
- A total of 92 DNA bands were amplified, 61 of which were polymorphic and the percent of polymorphic bands (PPB) was 66.30%. 共獲得92條清晰條帶，其中61條具有多態(tài)性，多態(tài)條帶比（PPB）66.;3%25。
- The presence of inclusions and developed prior particle boundaries (PPB) damage mechanical properties and service life of HIP disk. PPB（原始粉末顆粒邊界）和夾雜物等缺陷對盤(pán)件的性能和使用壽命不利，必須予以消除。
- This value,measured as ozone ,was initially set at an hourly average concentration not to exceed 80 ppb more than once per year. “毒理學(xué)試驗表明，臭氧的濃度高于環(huán)境值可能對血液的生化活動(dòng)產(chǎn)生危害，降低肺功能，增加一般呼吸系統的不適感?！?/li>
