筛的

F. Insufficient frequency of previous screening (eg, failure to be screened at least biennially).

f。之前的筛查不足（如没有至少2年筛查一次）。

F. Insufficient frequency of previous screening (eg, failure to bescreened at least biennially).

f。之前的筛查不足（如没有至少2年筛查一次）。

"Bolter:a machine used for sifting, especially for sifting flour."

筛粉机：用于筛粉的机器，尤用于筛选面粉

The cortical cells had thin walls and mitochondrium, and nucleus wassurrounded by chloroplasts, and vesicles were next to cell plasmalemma. However, cellwalls of velamen, cortex and exodermis in the mycorrhiza of D. nobile had ring orpapillary thickenings in many cases. The hyphae were surrounded by moremitochondria and vesicles of plant, and the hyphae were digested and their structure waschanged at last. The cell wall of endodermis also had typical ring thickenings, and manysieve orifices in sieve tube elements of phloem were covered by callose, while therewere liaison cords in a few sieve orifices.

金钗石斛菌根的根被细胞的细胞壁多处出现环形圈，外皮层细胞壁加厚，木质化，也有环形圈存在，皮层细胞细胞壁多角形明显，加厚，皮层细胞中存在被消化、失去结构的真菌菌丝，在菌丝周围有较多的线粒体、小泡，内皮层细胞的细胞壁呈现的典型的加厚及木质化环形圈，韧皮部筛管的筛板结构，绝大多数筛孔已为胼胝质所覆盖，仅个别筛孔中还存在连络索。

Through the analysis of the main influencing factors-the bore diameter and thickness of the polytetrafluoroethylene sifter on the blueprint quality and the service life, and the main technological parameters of the polytetrafluoroethylene sifter were determined in the comparison experiment on the different high rapid blueprint machines.

通过对影响晒图质量和使用寿命的主要因素——聚田氟乙烯筛板的孔径及厚度的分析研究，并利用不同型号的高速晒图机对所研制的聚四氟乙烯筛板进行对比试验，确定了聚四氟乙烯筛板的主要工艺参数。

Results The tristar of groove was consisted of beak of the ethmoidal bulla and its prolonging process, apex of the uncinate process and anterior peak of the middle turbinate, at the region of frontal recess. The structures called meatal groove, uncinate groove and bullar groove were observed around the ethmoidal bulla and the tristar of groove located at their origination. Under endoscopic view these structures looked like a triangular clefts, so it was named.

结果 星状裂是由筛泡的顶端及其向上伸出的角、钩突的顶端、中鼻甲的前顶端在额隐窝区域汇合形成的一个星状裂隙，上述结构围绕筛泡形成鼻道沟、钩突沟、筛泡沟，星状裂为三条沟的起始部。

Innovative Results】Based on study on colorectal cancer screening in Xiacheng district,the results have showed that①The CRC screening in urban area based on guideline established by our units had the same good results as in rural area.High risk factors questionnaire investigation had important role in CRC screening and it can make up the shortcomings of iFOBT and detect nonbleeding lesions,especially precancerous lesions such as adenomas and polyps;②Each high risk factor was sorted according to sensitivity and specificity for the first time among natural population in city.

通过对下城区大肠癌筛查的研究①首次证明来自于中小城市农村的大肠癌筛查方案对城市社区自然人群与中小城市农村的自然人群一样具有较好的检出效果，证明了问卷调查对大肠癌筛查的重要作用，能弥补iFOBT不足，发现其不能检出的包括不出血病变，尤其是腺瘤、息肉；②首次在城市社区自然人群中对各高危项目根据诊断的敏感度及特异度进行了排序。

In this study, as a original strain, antagonistic bacterium Ata28 was mutated by UV, UV+LiCl, DES and Microwave irradiation; the very goal of the research is to improve the control efficiency of Ata28 strain against tobacco brown spot and obtain strains advanced both in antagonism and biological characteristics, further provides theoretics and practical experience to the production.

采用紫外线和氯化锂复合诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间10s，15s诱变；通过平板对峙培养，筛选出8个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Ata28，抑菌带最大值达9.7mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Uv1-190、Uv1-199，烟苗经Uv1-190、Uv1-199菌液处理3d后，接种Tbs3的防治效果达51.3％、54.9％，比出发菌株Ata28的防治效果好。

Ata28 strain was mutated by UV with the most optimum mutant time, including 10, 20, 30s, that was chosen by the trial tests, considering the lethality rate and positive mutation rate of Ata28; it was found that 15 mutant strains were shown antagonism against Tbs3 strain by antagonism test on PDA plate, inhibition zone of mutant strains exceeded the original strain Ata28, and the maximum of inhibition zone reached 9.4mm; the mutant strain Uv-126 was found most effective in tobacco brown spot control and a rate of efficiency control reached 52.2% on tobacco plants three days after bacteria spraying.

采用硫酸二已酯诱变Ata28菌株，通过预备实验，计算Ata28菌株在不同诱变时间的致死率和正变率，选择该菌株的最佳诱变时间20min，40min，60min诱变；通过平板对峙培养，筛选出17个突变菌株在PDA平板上可明显抑制Tbs3的生长，抑菌带高于出发菌株Am28，抑菌带最大值达10.5 mm；经温室控病初筛和复筛试验，获得了对烟草赤星病有较好防效的突变菌株Des-66、Des-50，烟苗经Des-66、Des-50菌液处理3d后，接种Tbs3的防治效果达52.0％、56.6％，比出发菌株Ata28的防治效果好。

This paper experimentally studied smash characteristic of com straw, including mainly performance parameter of pulverizer such as consumption of electricity per ton, hour productivity and hammer patch thick under the condition of different moisture rates and sieve pore diameter .

本文主要对不同含水率、筛孔直径下粉碎机的吨料电耗、小时生产率及锤片厚度等性能参数进行了玉米秸秆粉碎特性试验研究，结果表明：对于相同筛孔直径，随着含水率的增大，负荷输入功率基本不变，吨料电耗增加，生产率降低；对于相同含水率的玉米秸秆，随着筛孔直径的增大，吨料电耗、负荷输入功率降低，小时生产率增加；度电产量和粉碎效率随着锤片厚度的减薄而增加，当锤片厚度为4mm时，既能够保持较高的粉碎效率，又保证了一定的耐用度。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。