多化的

The mutagenicity of seed powder and seed oil of transgenic CryIA cotton to mammals and fish was evaluated in this study. The raw cotton seed powder or seed oil was mixed into mice and fish's diet. Cyclophosphamide and NaF were used as positive controls respectively. Regular cotton seed powder and seed oil were used as negative controls. The micronucleus frequency in mice bone marrow polychromatic erythrocytes and in eripheral erythrocytes of Zebrafish were assayed in this study. The sperm malformation rate in mice was also investigated.

摘 要：分别以环磷酰胺和氟化钠作为阳性诱变剂，以普通棉的棉籽粉及棉籽油作为对照物，同时设阴性对照组，以成年封闭群昆明种雄性小鼠和斑马鱼为实验材料，将棉籽粉或棉籽油掺入饲料中饲喂小鼠或斑马鱼，检测小鼠骨髓嗜多染红细胞（Polychromatic erythrocytes， PCE）微核率（Micronucleus frequency， MN‰）和精子畸变率，以及斑马鱼外周血红细胞微核率。

The mutagenicity of seed powder and seed oil of transgenic CryIA cotton to mammals and fish was evaluated in this study. The raw cotton seed powder or seed oil was mixed into mice and fish's diet. Cyclophosphamide and NaF were used as positive controls respectively. Regular cotton seed powder and seed oil were used as negative controls. The micronucleus frequency in mice bone marrow polychromatic erythrocytes and in eripheral erythrocytes of Zebrafishwere assayed in this study. The sperm malformation rate in mice was also investigated.

分别以环磷酰胺和氟化钠作为阳性诱变剂，以普通棉的棉籽粉及棉籽油作为对照物，同时设阴性对照组，以成年封闭群昆明种雄性小鼠和斑马鱼为实验材料，将棉籽粉或棉籽油掺入饲料中饲喂小鼠或斑马鱼，检测小鼠骨髓嗜多染红细胞（Polychromatic erythrocytes， PCE）微核率（Micronucleus frequency，MN‰）和精子畸变率，以及斑马鱼外周血红细胞微核率。

Is a professional diamond tools production plant, product selection of high quality diamond and cubic boron nitride refined form, the variety many, the specification entire, the product has assorted diamond file, large sheet filing, grinding, grinding head, grinding wheel, saw blade, grinding wheel, carbide rotary burrs, grinding, hole drilling, Wire Saw, File, natural diamond grinding wheel cutter, metal pens and diamond polishing paste, oilstone, and the system for various types of non-standard shaped diamond Tools product line.

江苏锋菱超硬工具有限公司是一个生产金刚石工具的专业化工厂，产品选用优质金刚石和立方氮化硼精制而成，品种多，规格全，产品有金刚石什锦锉、大板锉、磨针、磨头、砂轮、锯片、磨轮、硬质合金旋转锉、磨盘、孔钻、绳锯、锉刀、天然金刚石砂轮刀、金属笔及金刚石研磨膏、油石等，并承制各类非标异型金刚石工具系列产品。

The current knowledge concerning effects of polybrominated diphenyl ether on benthic aquatic organisms is still very limited although they have been widely used as fire retardant additives for 3 decades.

多溴联苯醚(polybrominated diphenyl ether，PBDEs)为溴化阻燃剂的一种，近30年来已被广泛地运用，但目前仍少有研究探讨其对水生底栖生物之毒性影响。

Based on simulation principles of two-phase flow,a test rig has been set up for studying multi-phase flow,during flue gas desulfurization ,in topping alkaline atomizers.

根据两相流相似模化原理建立了前置碱雾发生器烟气脱硫颗粒图像测速技术多相流动实验台，运用颗粒图像测速技术对前置碱雾发生器内气液固三相流动进行测量，得到不同工况条件下喷雾射流与固体颗粒的流动结构和流场信息。

Saline lake sediments are characterized by multi-stage and long period of salt formation, continuous sedimentation and cyclicity of salinization-desalinization, so they are one of the important research objects with respect to the reconstruction of paleoclimate and the study of global change.

盐湖沉积具有成盐多期性和长期性、沉积连续性、淡化－咸化周期性等特点，因而成为恢复古气候环境、进行全球变化研究的重要研究对象之一。

Upon FGF binding, specific membrane receptors dimerize and autophosphorylate, then activate several downstream signaling pathways including Ras-MAPK.

FGF通过结合细胞表面的FGF受体，使其二聚化并自体磷酸化，活化后的FGF受体具有酪氨酸激酶活性，进而活化胞内下游多条信号通路。

Chapter Five is centered on the spatiality of Donne and his poems.

第五章重点论述了多恩及其诗歌的&空间化&。

Objective To investigate in Chinese population the relationship between GTP cyclohydrolase 1 gene mutation and phenotypes of dopa-responsive dystonia.

目的 分析国人多巴敏感性肌张力障碍患者三磷酸鸟苷环羟化酶1（GCH-1）基因突变与表现型的关系。

Many different polymer feedstocks, from polypropylene and nylon to polyurethane, are used in this versatile technology.

这种多面化技术可以采用从聚丙烯、尼龙到聚氨酯聚合物等很多不同的基体材料

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。