吸根

The reaction between acridine yellow and nitrite nitrogen in acid medium was studied.

利用在酸性介质中，吖啶黄与亚硝酸根反应并在波长436 nm处的吸光度与亚硝酸根浓度呈线性关系，提出并建立了测定亚硝酸盐氮的新方法。

Results The DNA contents of different categories of samples were as followings:suck pipes(0.72-116.78 ng),cup edges(2.15-142.5 ng),mouths of drin...

结果从25根饮料吸管上提取的DNA量在0.72～116.7.8ng，16个水杯杯缘提取的DNA量在2.15-142.5ng，31个饮料瓶口提取的DNA量在1～34.65ng，10根筷子上提取的DNA量在3.35～26.6ng，12个果核中提取的DNA量在0.294～21.4ng，6份吃剩的骨头中提取的DNA量在0.88～5.88ng.100份检材性别及9个以上STR位点分型成功率平均为59.38%。

For next Sunday's experiment you will need the following special items: A piece of cardboard (about 30cm by 16cm), a sheet of construction paper (about 35cm by 50cm), sellotape, a straw, a ball bearing, bb gun bullet or other small ball that will fit inside the straw.

下周日的科学实验，你需要特别准备以下的东西︰一片硬纸板约三十公分长、十六公分宽，一张美工纸，约五十公分长、三十五公分宽，胶带、一根吸管、小铁球、BB枪子弹、或其它可塞入吸管里的小球。

By synthetically analysizing the physical and chemical properties of all components and particle size, the content of F2641 in the JOB-iC is determined by gravimetric analysis after F2641 is seperated from HMX,TATB and PNP through ? alkali reflux. Determination conditions is set as follows the sample is boilingly refluxed for six hour in a constant temperature bath after adding lOOm! 8.0 ?? 0.1% NaOH. The solvent DMF saturated by TATB is used for extracting HMX,F21 and PNP from the sample and TATB is seperated by crucible filter G4. The mass precent of TATB is determined by extraction fractionation. The mass percent of PNP is measured by multiwavlength linear regression ultraviolet spectrophotometry. The testing conditions are set as follows:multiwavlength constitution: X=267nxn, 275nm, 283nm, 29mm, 299nm,the application scope of the Lambert-Beer law: the concentration of PNP is O.005?0.O25mgIml, the concentration of HMX is 0.060.3Omg/ml,absorption coefficents of PNP and HMX are solved by the slope of linear regression curve of absorbency- concentration of standard solution of PNP and HMIX for measuring wavelengthes,on the basis of the Lanibert-Beer law and absorbancy additivity principle, the slope of linear regression curve of A/E(1) and E1 of PNP and HMX solution is regarded as the concentration of PNP in the solution.

根据传爆药中各组分的物理、化学性质及主体炸药的粒度大小，进行综合分析，确定了采用碱回流重量法测定JOB-1C 中F_(2641)的含量，测定条件：加入100ml浓度为8.0±0.1％的氢氧化钠，在恒温水浴中煮沸回流6h；采用溶剂萃取法测定JOB-1C中TATB的含量，选择TATB饱和的二甲基甲酰胺为萃取溶剂，用G4坩埚式过虑器进行萃取分离；采用多波长线性回归紫外分光光度法测定JOB-1C中PNP的含量，通过实验确定了多波长组合：λ=267nm，275nm，283nm，291nm，299nm；朗波—比耳定律的适用范围为PNP浓度：0.005～0.025mg/ml，HMX浓度：0.06～0.30mg/ml；在测定波长下，对PNP、HMX标准溶液的吸光度—浓度进行线性回归，由回归曲线的斜率得出PNP、HMX的吸收系数；根据朗波—比耳定律和吸光度加和性原理，在测定波长下，对PNP、HMX 两组分混合溶液A_i/E_HMX(i与E_PNP(i/E_HMX(i进行线性回归，回归曲线的斜率即为混合溶液中PNP的浓度。

The lunate thermosiphon elevation tube was increased from 1 to 3 in order to improve the elevation of the solution.

弦月形的热虹吸提升管由原来的1根增加到3根，增大了溶液提升量，降低了热源启动温度。

An experiment was carried out in the greenhouse using a three-compartment rhizobox system to study effects of inoculation of arbuscular mycorrhizal fungi Glomus etunicatum, Glomus intraradices and Glomus mosseae on Festuca rubra and Agrostis hugoniana, and soil environment. Results indicate that inoculation had significant effects on AM fungi infection of the plants and plant growth, increasing dry matter and P contents of both ground parts and roots and phosphorus absorption rate of the plants, improving microbial flora in the rhizaphere and water stability of soil aggregates.

采用三室隔网装置，就Glomus， etunicatum、intraradices、Glomus mosseae对2种高山草地植物和土壤环境的影响进行了研究结果表明：接种AM真菌对草地植物的侵染和生长均具显著效应，植株地上部、根系干物重以及含磷量、吸磷量均显著高于不接种处理，菌根菌丝对植株吸磷的贡献率达

It's like trying to suck on a holey straw. Holey moley, I don't even know what that means!

那就好像试著用一根有破洞的吸管吸饮料一样毫无作用，天啊，我甚至不知道那是在干嘛！

We set up the angular momentum conservation model of wind accretion of Ba stars, and then derive the change equations of the orbital elements. Finally, combining the heavy element nucleosynthesis of AGB stars, we creatively calculate the heavy-element overabundances of barium stars in a self-consistent manner adopting accreting and mixing on successive occasions.

我们建立了Ba星形成的星风吸积的角动量守恒模型，推导出其轨道根数的变化方程，并结合AGB星的重元素核合成，通过逐次脉冲吸积与混合，自洽地计算出Ba星的重元素超丰。

Woman: I really enjoy drinking soda with a straw, but I want one in metal thatwon't corrode.

女：我最喜欢用吸管喝苏打水，但是我一直想要一根能不被腐蚀的吸管。

Crevice tool, NT all-purpose floor tool (300 mm), Bumper bar, 2 x 0.5 m metal suction tubes , 2.5 m suction hose, Bend, Cartridge filter , Stainless steel container.

吸缝扒头、过滤器装置、NT通用地面吸尘扒头（300 mm）、2根0.5米长的金属管、不绣钢容器。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。