四对的

Article 44 Business-operators in the catering services industry in urban areas must adopt measures to prevent and control the pollution caused by lampblack to the residential environment in the neighborhood.

第四十四条城市饮食服务业的经营者，必须采取措施，防治油烟对附近居民的居住环境造成污染。

The second chapter is to analyze Freudenthal's thought of mathematics education in brief, and summarize four principles: realistic mathematics, mathematization, thinking and recreation. The next two chapters are case studies, the intention of which is to test the efficiency and practical value of Freudenthal's thought of mathematics education.

归纳了他数学教育思想中的四条原则：数学现实、数学化、反思和再创造论文第三、四两章属于实证研究，通过这两章对弗赖登塔尔数学教育思想的有效性和实践性进行验证。

The typical force and moment of a four stroke in line engine with four cylinders is analyzed and input to the optimal control system.

对典型的四缸四冲程发动机的干扰力和力矩进行了分析并将其用于优化控制系统。

Passersby were asked to evaluate what they were told were four different nightgowns and four different pairs of stockings.

他们告诉路人这是四件不同的睡衣以及四双不同的袜子，并要路人对睡衣和袜子作出评价。

Molecular docking study of telomerase TMPYP4 quadruplex stabilization role Abstract: The purpose of ligand TMPyP4 to find telomerase TMPyP4 quadruplex in the best mode.

分子对接法研究TMPYP4对端粒酶四链体的稳定化作用摘要：目的以TMPyP4为配体，寻找TMPyP4在端粒酶四链体上的最佳作用方式。

At 20℃, 25℃and 30℃, the percentage of mictic females in the offspring of the four rotifer clones was significantly different, and that of Clone C was the highest.

在四个温度(15℃、20℃、25℃和30℃)下对四个克隆萼花臂尾轮虫的后代质量及其与温度、轮虫个体大小和卵大小等之间的关系进行了研究。

The stability of PCR-RFLP in this study suggested that this technique is feasible for identification of four scallop species.

酶切结果在四种扇贝各群体间的稳定性，证明了利用该技术对四种扇贝进行物种鉴定的可行性。

Former University of South Florida football player Nick Schuyler was cling ing to an overturned boat that belongs to Oakland Raiders linebacker Marquis Cooper.

继搜救团队救出第四人，南佛罗里达大学前橄榄球运动员 Nick Schuyler 后，海岸警卫队表示会继续对从佛罗里达海湾离岸的四名失踪划船者的搜查。

Pooling together thedata from comparing the 4x original varieties with their corresponding 2x varietiessince 1979,it was found,that tetraploidy could cause variation of manyagronomic traits.

自1979年对四倍体水稻原种(4x)和相应的二倍体水稻品种(2x)进行了对比，结果发现，四倍体水稻原种的许多农艺性状发生了变化。

Unexpectedly many of these neurons actually had a preference for where the experimenter was grabbing the object — about a fourth of the cells fired more rapidly when the action took place within arm's reach of the monkey (its "peripersonal" space), while another fourth were more excited when the action was out reach (its "extrapersonal space").

没想到许多神经元对实验者动作的部位有更多反应--离猴子一手背距时约四分之一的细胞迅速起动，而另四分之一在远离时起动。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。