查询词典 ranging

An efficient central ellipse algorithm for estimating the echo peak positions of ultrasonic sampling was presented to find the accurate receive time of echo by searching the peak of energy bursts, which is base on the theories of energy centrobaric correction method and least square method in the ultrasonic ranging system.

基于能量重心校正法和最小二乘法的原理，提出了一种改进型椭圆中心超声回波寻峰算法：通过曲线拟合搜索椭圆中心点，即回波信号能量集中点，进而找到回波信号的峰值点。

METHODS: The Chelerythrine was used as the experimental group with concentrations ranging from 24.4μg/ml to 390.6μg/ml prepared with BHI broth medium with contained 2% glucose, and BHI culture medium was used as the control group.

采用二倍稀释法，用含2%蔗糖的脑心浸萃液肉汤琼脂液体培养基，将白屈菜红碱稀释为从390.6μg/ml到24。

The preparation method is characterized in that:(1) at minus 10 DEG C to 10 DEG C, a chloroauric acid solution with a certain concentration is added into a nano-Pt/C catalyst by ultrasonic or stirring mixture and the atomic ratio of Pt to Au is controlled between 18:1 and 5:1;(2) a small amount of monohydric alcohol or dihydric alcohol or trihydric alcohol of C1-C3 is added and is stirred at minus 10 DEG C to 10 DEG C for 10 min to 5h, so as to prepare the carbon-loading Pt-Au bimetallic nano electro-catalyst;(3) if necessary, the catalyst obtained by the step (2) is treated for 0.5 to 4h at high temperature ranging from 100 DEG C to 700 DEG C in the inert or reducing atmosphere, so as to adjust and control the grain size of the Pt-Au bimetallic nano electro-catalyst.

本发明涉及了一种高稳定性碳载Pt-Au双金属纳米电催化剂的制备方法，其特征在于：(1)在-10～10℃中，将一定浓度氯金酸溶液加入到纳米Pt/C催化剂中经超声或搅拌混合，控制Pt∶Au的原子比为18∶1-5∶1；(2)添加少量C 1 -C 3 的一元、二元或三元醇类，在-10～10℃下搅拌10min-5h，制备了碳载铂金双金属纳米电催化剂；(3)视需要，可将步骤(2)得到的催化剂在惰性气氛或还原气氛中经100～700℃高温处理0.5-4h，可调控Pt-Au/C双金属纳米催化剂的粒径。

Several thousand Taiwanese packed a square in central Taipei and enjoyed a free eclectic mix of music ranging from aboriginal Taiwanese songs, to rap and the special blend of Taiwanese black metal that is Chthonic.

挫折感开始发作，乐团很快就失去了一名成员，鼓手决定退团。不久之后乐团重振旗鼓，他们想要继续留在舞台的决心打败了解散的念头，并且开始新的计画。

The fruit is round to slightly claviform, and dries out over time. The fruit is a dirty white colour, ranging to yellowish or pinkish.

种子包形状圆形稍带棒状，会在一段时间内干瘪，种子包为很脏的白色，有些也会带黄色或粉色。

The fingerprints of 10 species including 27 accessions in genus Corchorus were investigated with the technique of RAPD.Twenty-five primers were screened from 119 random primers,and a total of 329 DNA fragments were amplified ranging from 0.3～3.0 kb,253 (87.78%),which were polymorphic.

采用RAPD标记构建了黄麻属植物10个种27份材料的指纹图谱，从119个随机引物中筛选出清晰且多态性高的25个引物，共扩增出329条DNA片段，分子量在0.3～3.0 kb之间，其中294条谱带具有遗传多态性，多态比率为89.36％，平均每个引物扩增出13.16条带。

The fingerprints of 10 species including 27 accessions in genus Corchorus were investigated with the technique of RAPD. Twenty-five primers were screened from 119 random primers, and a total of 329 DNA fragments were mplified ranging from 0.3~3.0 kb, 253 (87.78%), which were polymorphic.

采用RAPD标记构建了黄麻属植物10个种27份材料的指纹图谱，从119个随机引物中筛选出清晰且多态性高的25个引物，共扩增出329条DNA片段，分子量在0.3～3.0 kb之间，其中294条谱带具有遗传多态性，多态比率为89.36％，平均每个引物扩增出13.16条带。

The Jedi Temple also contained the archives, the vast library that encompassed the Order's entire twenty-five millennia of existence: everything from the widest-ranging cosmographical sur veys to the intimate journals of a billion Jedi Knights.

绝地圣殿同时还包括一个档案室，那个巨大的图书馆里包含了绝地教团那整整二万五千年的历史资料：从最宏大的宇宙学到数十亿名绝地武士的私人日记，一切应有尽有。

Both plain and countersunk headed types of ejector pin are available as standard parts in an extremely large number of sizes ranging from 1.5 mm to 32 mm diameter respectively.

普通的和沉头的顶杆是标准件，标准的尺寸范围很广，直径分别从1.5mm 到32mm 。

Studies on stability indicated that PHGF proliposomes should be stored at low temperature and against light, which ensured unchange of their redispersity, content of drug, encapsulation efficiency, acid value and peroxide value. Liposomes were multilamellar vesicle structure under transmission electron microscopy. Average particle size was 0.65 micrometer, ranging from 0.09 micrometer to 1.21 micrometer. Cryoscopic value was 0.64 C determined by cryoscopic method, which was a little higher than that of isotonic solution.

以透射电镜观测PHGF前体脂质体再分散后的形态为囊泡状；激光散射法测得平均粒径为0.65μm，且粒度分布在0.09μm～1.21μm之间；该脂质体荷负电，ζ电位为-44.23mV；冰点降低法测得冰点降低度数为0.64℃，略高于等渗溶液冰点降低度数；测得粘度为1.83mPa·s，达到生理要求；此外，对PHGF脂质体的刺激性、溶血性、热原、异常毒性和过敏沈阳药科大学硕士学位论文拘要性检查表明均符合静脉注射给药的标准。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。