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| 71. | molecule Cl2) that severely irritates the eyes and respiratory system (and was used for that purpose as |
| 氯：周期表VIIa族，非金属的化学元素，化学符号Cl，原子序数17。为浅黄绿色的腐蚀性有毒气体，对眼睛和呼吸系统有刺激作用，在第一次世界大战时用作化学战战剂。 |
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| 72. | When being used for determining thin degree of different fibres, such as cotton, flax, chemical fibre |
| 用于测定棉、、纤等各种纤维的细度时，切断在规定张力下的纤维成一定长度。 |
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| 73. | A variety of chemical carcinogens as diverse as benzene, cigarette smoke, and nitrites can initiate and |
| 多种多样的化学致癌物如苯、烟、硝酸盐都能够引起()促进肿瘤的发生。 |
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| 74. | Appraisals on the safety for use of agricultural chemicals, such as pesticides and chemical fertilizers |
| 农药、化肥等农用化学物质的安全性评价，必须经国务院卫生行政部门审查同意。 |
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| 75. | Installations such as explosives depots and chemical stores, and dangerous goods transport routes may |
| 危险设施(例如炸药及化学品仓库)和危险品的运输路线，可能对附近居民构成危险。 |
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| 76. | molecule Cl2) that severely irritates the eyes and respiratory system (and was used for that purpose as |
| 氯:周期表VIIa族，非金属的化学元素，化学符号Cl，原子序数17。为浅黄绿色的腐蚀性有毒气体，对眼睛和呼吸系统有刺激作用，在第一次世界大战时用作化学战战剂。 |
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| 77. | As we know, in chemical textbooks or handbooks, the values ofionic standard heat of formation are often |
| 通常,教科书及各种化学手册中给出的离子标准生成焓都是相对于氢离子而言的,是相对值。 |
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| 78. | This trend is likely to continue as increased sophistication in chemical techniques are producing such |
| 这种趋势很可能要持续下去，因为越来越先进的化工技术正在生产出像分子大小的机械零件这样新颖的分子来。 |
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| 79. | dissipation can become a basic model of learning motivation and consequently training its learning motivation as |
| 耗散结构可以成为学生学习动机培养的基本模型,因此,作为一门实用性的化学学科,其学习动机的培养有其特殊的教学策略。 |
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| 80. | be shaped and reshaped by heat and pressure But thermosets cannot be reshaped because they undergo chemical |
| 热塑塑料可通过加热和加压成形和再成形,而热固塑料却由于在硬化过程中发生了化学变化而不能再成形。 |
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