查询词典 nontoxic

As an ideal dulling coating product, it is nontoxic and nonirritating after coating, and is

该产品外观呈浑浊液体。

As an ideal dulling coating product, it is nontoxic and nonirritating after coating, and is capable of reducing the original colors of the photos.

该产品外观呈浑浊液体。

This unfading, washable and rapid drying product has high brightness, resistance to yellowing, good adhesion, strong wear resistance, minimal smell, excellent ductility and fine folding resistance, the solidifying product is both nontoxic and nonirritating.

该产品淋膜后不爆裂，气味极低，固化后无毒无刺激，高光亮度油性耐黄变，附著力好，抗划伤性强，不褪色，耐水洗，乾燥速度快，同时具有优良的延展性和耐折性等优点。

This unfading, washable and rapid drying product has high brightness, resistance to yellowing, good adhesion, strong wear resistance, low smell, excellent ductility and fine folding resistance, the solidifying product is both nontoxic and nonirritating.

该产品淋膜后不爆裂，气味极低，固化后无毒无刺激，高光亮度，耐黄变，附著力好，抗划伤性强，不褪色，耐水洗，乾燥速度快，同时具有优良的延展性和耐折性等优点。

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。

Since OPP and its sodium salt are nontoxic, odorless, of high phytocidal activity, good disinfecting and mould-inhibiting properties, they can be used as antiseptic, used for fruits and vegetables especially mandarins to inhibit mould, and used to treat lemons, pineapples, melons, apples, pears, peaches, tomatoes, etc, to protect them from putrefying to the greatest extent.

由于邻苯基苯酚及其钠盐除莠活性很高，并且有广谱的杀菌除霉能力，而且无毒无味，是较好的防腐剂，可用于水果蔬菜的防霉保鲜，特别是用于柑桔类的防霉，也可以用于处理柠檬、菠萝、瓜、果、梨、桃、西红柿等，可使腐烂降到最低限度。2。

The scaffolds should have features of nontoxic and no teratological effects to the body.

所选择的支架材料必须具有无毒、无致畸的特点。

For the first time a safety and nontoxic solvent were used to gain the crystal of teasaponins,avoiding environmental contaminated of toxical impregnate and receiving the high purity teasaponin products.

茶皂素粗提物对食品腐败细菌、真菌以及植物病原真菌的抗菌实验结果表明，茶皂素对各种细菌和真菌均有不同程度的抑制作用，且抑菌效果与茶皂素浓度呈正相关。

ResultsESC(the extract of Solidago canadensis L.) markedly prolonged the writhing latent period and decreased the times of writhing of mice induced by ip acetic acid, while it had no obvious effect on the pain threshold value in hot plate test. ESC significantly prolonged the tussive latent period of mice, decreased the tussive times and increased phenolsulfonphthalein excretion quantity of trachea of mice. ESC was nontoxic according to the acute toxicity test.

结果首次对国产加拿大一枝黄花进行了体内药理作用研究，发现加拿大一枝黄花提取物能显著延长醋酸致小鼠扭体潜伏期，减少扭体次数；但未明显提高热板法实验小鼠的痛阈值；能显著抑制浓氨水所致小鼠咳嗽潜伏期和咳嗽次数；显著增加小鼠气管的酚红排泌量；急性毒性实验表明加拿大一枝黄花提取物无明显毒性，既不引起小鼠死亡也不影响小鼠体重正常增加。

The coat contains nontoxic and elastic paint which is of low water resistance and which schleps rust and guard against rust and which is of the virtue of keeping clean and unpoisonous, also it can depress the growth of the lichen and worm effectively.

为有用办理大口径涂塑钢管生产难的标题，制作工艺专家组首先从涂层质料上动手，研制并应用了弹性体带锈防锈涂料，再引入防腐及卫素性能较好的防护涂料。

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。