有环的

At present, the common oligmer a acrylated epoxy, urethane acrylate and ployster acylate, etc.

目前，常用的齐聚物有环氧丙烯酸酯、聚氨酯丙烯酸酯和聚酯丙烯酸酯等。

The atoll, babies are born only when there's room.

在环礁基地里孩子只能在有空房的情况下才能出生

I have ordered many pearls with the same clasp and never had any problems.

我以前买过很多这种有钩环的珍珠都没有问题。

Also we observed in this study there is a direct proportional relationship between the cyclohexane conversion and the amount of catalyst initiator "NHPI".

此外，我们在本研究中观察到有直接的比例关系，环己烷转化率和催化剂用量引发" NHPI "。

EIA have some knowledge and experience to take part in the environmental impact assessment work.

有一定的环评认识和经验，能参与环境影响评价工作。

She wears an ivory brocade gown with golden embroidery in a fleur-de-lis design, an expansive layered, pleated tulle skirt, tiara crown with marquis-cut rhinestone and veil, and beaded choker.

她身着fleur－de－lis风格的绣有金线的象牙色织锦长袍有着宽大的裙摆，带有饰有水晶的皇冠，面纱以及珍珠颈环。

Leigong Vine is particularly efficacious in its anti-inflammatory and immune functions. Three diterpene epoxides isolated from the root of Leigong Vine exert a a decided effect in fighting leukemia.

雷公藤有显著的抗炎和免疫作用，根部分离出的三种二萜环氧化合物，有明显的抗白血病作用。

Glioma is still one of refractory disease in the neurosurgical field; the development of new primary and adjuvant treatment is vital. Recently, the gene therapy of glioma is developed rapidly and there are many methods about the gene therapy that include: suicide gene therapy, immunologic gene therapy, drug resistangce gene therapy, angiostatin gene therapy and so on. The sucide gene therapy is the most potential approach of antitumer, these nonmammalian genes encode enzyme that convert nontoxic prodrugs into highly toxic metablites. Cells transfected with suicide genes are targeted for specific negative selection, witch can be induced by administrtion of the corresponding produg. Among the enzyme/produg combinations, two of the best characterized system are herpes simplex virus thymidine kinase /ganciclovir and Escherichia coli cytosine deaminase /5-flourocytosine (5-FC). The formor can convert the antiviral nucleoside analogs acyclovir , ganciclovir to their nucleoside monophosphate derivatives, the monophosphate forms are subsequently phosphorylated by endogenus cellular kinases to triphosphates, these molecules are potent inhibitors of DNA synthesis.

近年来脑胶质瘤的基因治疗发展迅速，应运而生的方法有自杀基因、免疫基因、多药耐药基因以及抗血管生成基因等，其中自杀基因被认为是最有前景的基因治疗方法，它又称病毒介导的酶／药物前体疗法，是利用转基因技术将哺乳动物细胞中所不含有的自杀基因转入到哺乳动物肿瘤细胞中，该基因表达的产物可将无毒的药物前体转化为毒性药物，从而选择性杀伤该肿瘤细胞，常用的自杀基因有单纯疱疹病毒-胸苷激酶基因和大肠杆菌胞嘧啶脱氨酶基因，前者催化无毒性抗病毒核苷类似物如丙氧鸟苷、无环鸟苷等成为单磷酸核苷衍生物，然后在内源性细胞激酶作用下转化为具有明显毒性的三磷酸核苷，作为DNA合成链的终止剂和DNA合成酶的抑制剂，干扰细胞DNA的合成；后者编码的胞嘧啶脱氨酶可催化5-氟胞嘧啶（5-FC）脱氨成为5-氟尿嘧啶（5-FU），然后代谢为有毒性的5-氟尿嘧啶-5′三磷酸（5-FUTP）和5-氟-2′脱氧尿嘧啶-5′磷酸（5-FdUTP），5-FUTP通过与UTP竞争性结合而抑制mRNA和tRNA的合成，5-FdUTP则作用于胸苷合成酶，导致TMP衰竭而阻止DNA的合成，最终诱导肿瘤细胞凋亡。

Any of various Old World birds of the family Phasianidae, especially the ring-necked pheasant introduced in North America, characteristically having long tails and, in the males of many species, brilliantly colored plumage.

雉鸡，野鸡一种欧亚大陆的雉科鸟，尤指从北美洲引进的颈上有环纹的雉鸡，特征是长尾巴、雄性有许多种华丽多彩的羽毛

LAU Mun Road east of the Welfare Elementary School Hurdle Central build a pond, there are 10 long width of four meters of natural Reaumuria soongorica rock, this is a rare native stone, eight scenic spots of the old Guangzhou,"Sui Dandong days" in the "ear stone."

仪门东边原惠福西路小学内有环砌跨栏水池，内有十块长宽约4米的天然红砂岩石，这是一块罕见的原生石，即旧羊城八景&穗石洞天&中的&穗石&。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐