Carbon tetrachloride is a chemical destroying the ozone layer, and its use should be decreased gradually.

1、

All cases were cured after treated with chloramphenicolum or tetracycline tablets and supportive liver protection therapy.

所有患者经氯霉素或四环素类片剂及保肝治疗均痊愈.

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2、

Tetracycline sensitive is the worst sensitive ( 22.2 % ) .

四环素敏感性最差,其敏感率为 22.2%.

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3、

In human cells, tetracycline does not accumulate enough to hinder protein synthesis.

在人类细胞里, 四环素不能堆积到足够程度来阻碍蛋白质的合成.

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4、

The antibiotic tetracycline cause gray teeth in children whose teeth are still developing.

四环素能使仍处于发展阶段的儿童的牙齿变成灰色.

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5、

Objective : To evaluate the effect and safety of semiconductor laser bleaching on tetracycline-stained vital teeth.

目的: 评价半导体激光漂白四环素牙的临床效果和安全性.

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6、

Tetracycline is indicated in such cases.

这种病例四环素显示很有效.

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7、

He was treated with metronidazole for three weeks per os and tetracycline for four months.

其病程分期属于前淋巴瘤期的晚期.

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8、

Microspore abortion occurred after the tetrad formation.

小孢子败育发生在四分体形成以后.

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9、

The tapetum begins to vary at the stage of tetrad with the cytoplasm anther cell.

小孢子孢原为多细胞,小孢子母细胞减数分裂产生四面体型的小孢子四分体.

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10、

Super-microspore happened in the 5 % ~30 % or more tetrads and its formation was directly concerned with B-chromosome.

四分体中额外小孢子的形成与B - 染色体直接有关,其频率为5%～30%或更高.

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11、

The content of sulfoether in catalytic cracking diesel oil was determined by tetraethyl-lead potentiometric titration method.

应用四乙酸铅电位滴定法测定催化裂化柴油中硫醚硫的含量,电位稳定,终点电位突跃明显,结果可靠.

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12、

Historically, the primary source of lead emissions has been the result tetraethyl lead additives to gasoline.

从历史的角度讲, 铅挥发的最初来源是添加到汽油中的四乙基铅.

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13、

Chapter 3 introduces the variable time-step scheme in combination with solution-mesh refinement on unstructured tetrahedral mesh.

第三章介绍结合变时步法之非结构性可调适四面体网格.

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14、

An algorithm for generating three-dimensional tetrahedral mesh for simulation of brain deformation is presented.

本文提出了一种用于模拟脑组织变形的三维四面体网格划分算法.

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15、

The Rubik's is a toy in the shape of a tetrahedron.

魔方是个四面体的玩具.

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16、

Tetrahedron sandstone statues tower, the existing four, descending, were folded pyramid.

四面体砂岩造像塔, 现存4块, 由大到小,呈塔形叠起.

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17、

The internal structure of silica has a pyramid ( tetrahedron ) unit .

硅的内部结构是一个四面体.

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18、

The catalysis of big pore strong acid resin for 1, 4-butanediol dehydration to tetrahydrofuran is investigated.

考察了大孔强酸性树脂对1, 4 丁二醇脱水制四氢呋喃的催化作用.

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19、

Removal alcohol from crude tetrahydrofuran, formation principle of peroxidate and antioxidation technique were introduced.

介绍了粗品四氢呋喃的除醇技术, 过氧化物的生成机理与抗氧化技术.

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20、

The catalysis of big pore strong acid resin for 1,4-butanediol dehydration to tetrahydrofuran is investigated.

考察了大孔强酸性树脂对1,4 丁二醇脱水制四氢呋喃的催化作用.

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