单交

These samples were collected along a main street across the urban area and a mountain route from foot to the top. Results demonstrate that the main magnetic minerals in the street dust are magnetite, maghaemite and haematite with some paramagnetic minerals. Plots of Mrs/Ms vs. Bcr/Bc and Xfd % vs. X ARM/SIRM indicate that the main grain size of magnetic minerals in the street dust are pseudo single domain. The results reveal that the Lanzhou city is more polluted in spring than in summer. The main pollution sources are anthropogenic activities （81.9%） and natural dust （18.1%）, especially the former. The spatial distribution of pollution is controlled by the topography and weather conditions.

结果表明，兰州市街道尘埃中磁性矿物含量较高，主要磁性矿物是铁磁矿、磁赤铁矿和赤铁矿，并伴有少量顺磁性矿物；磁性矿物粒度主要是准单畴；市区污染春季较夏季严重，春季高频率的强沙尘暴可能带来了更多的磁性矿物；兰州市污染物的沉积和分布在很大程度上受到气象条件和地形地貌格局的影响，市区每个盆地东端高于其它地区；兰州市污染以人为活动产物为主，人为活动贡献约为81.9％，其中包含交通约22.6％的贡献，自然降尘贡献约为18.1％；特殊的地形和气象条件，使得兰州市区的大气环境容量比平原城市的环境容量小得多，进而导致严重的大气污染。

Confirm the optimum extraction technics of polyphenol of Humulus lupulus by single factor and orthogonal test: impregnant's concentration 70%, the ratio of materiel and impregnant 1:25, circumfluence temperature 45℃, time 1h and extraction quantity achieve 47.29mg/g dry Humulus lupulus at this condition.

通过单因素和正交试验确定了酒花多酚的最佳提取工艺：浸提剂为70%丙酮，料液比1：25，回流提取温度45℃，提取时间为1h，在此条件下多酚的提取量达到47.29mg/g干酒花。

The best parameters of technology have been determined through single factor and positive cross test on indigotin and Indirubin respectively: medicinal materials granularity is 40 eye,extractiontime is 4hrs, ethanol concentration is 75%.

针对靛蓝、靛玉红分别通过单因素试验和正交试验，确定了提取的最佳工艺参数为：药材粒度40目，提取时间4hrs，乙醇浓度75％。

Data and method 1 ～ will be in 1.1 clinical data in December 2007 couple of this central travel IVF-ET 4, patient 1, 2, 3 pathogenies all send a gender for afterwards infecund disease, tubal block, 4 pathogenies are the patient to send a gender formerly infecund disease, oviduct is connected and not disease of free, weak spermatozoon.

然而，部分患者在取卵日因为精神过度紧张出现取精困难，经心理疏导、药物治疗后多次手淫取精、夫妻性交中断法取精等处理后均失败，部分生殖中心有时通过电子射精仪取精，而大部分中心则需通过穿刺取附睾或睾丸精子来进行卵细胞胞质内单精子注射完成体外受精。

Although receptive anal sex is estimated to produce the highest risk of infection, infection after a single insertive contact has also been described.

已有的结论以为肛交可发生更大的感染风险，单次插入接触后感染也已被描述。

Biology of the Apis cerana cerana was the studied subject in this paper. Virgin queens were instrumentally inseminated with 1 or 2 males, and the controlled ones were naturally mated.

以中华蜜蜂为试验材料，对处女蜂王分别进行单雄和双雄人工授精，并以蜂王自然交尾的蜂群作为对照。

Total flavone was extracted from V. jatamansi Jones by ultrasonic method. The effects of four factors including ethanol concentration, solid-liquid ratio, soaking time and ultrasonic time on the yield of total flavone were investigated. The optimum technological conditions of total flavone exaction were confirmed through single factor test and the orthogonal test.

方法］利用超声法提取蜘蛛香中的总黄酮，考察了乙醇浓度、固液比、浸泡时间、超声时间4个因素对总黄酮得率的影响，通过单因素试验和正交试验确定了提取的最佳工艺条件。

It applies single factorial experiment and orthogonal test to confirm the best technological parameter,and thus obtain solid and white semitransparent konjak granulated gel

运用了单因素试验和正交试验确定了制粒的最佳工艺参数，并且获得了坚实有弹性，复原性好，口感细腻，碱味淡的半透明状洁白魔芋凝胶颗粒

It applies single factorial experiment and orthogonal test to confirm the best technological parameter,and thus obtain solid and white semitransparent konjak granulated gel

运用了单因素试验和正交试验确定了制粒的最佳工艺参数，并签ゑ得了坚实有弹性，复原性好，口感细腻，碱味淡的半透明状洁白魔芋凝胶颗粒

In the present work, the synthesis of phytosterol laurate was studied, which was esterified directly by using sodium dodecyl sulfate as catalyst. And the optimal conditions were obtained by single-factor and orthogonal experiment.

研究使用十二烷基硫酸钠为催化剂，通过羧酸直接酯化，合成植物甾醇月桂酸酯的工艺，利用单因素试验和正交试验确定最佳工艺条件。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷