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- Radioactivity such as that of strontium 90 causes health problems in people even at low levels. 像银－90的放射性，哪怕是较低水平的放射性，都会对人体的健康造成危害。
- Method Strontium 90 contact therapy was introduced among 26 infants with skin hemangiomas. 方法应用90锶敷贴为26例小儿皮肤血管瘤治疗。
- Objective To observe the effect of Strontium 90 stick therapy on skin hemangiomas of infants and sum up nursing points. 目的观察90锶敷贴治疗小儿皮肤血管瘤的疗效及总结护理要点。
- Ecologists consider DDT and radioactive substances such as strontium 90 to be representative of contaminants as a whole. 总的来说，生态学家认为DDT和放射性物质(如锶－90)可以作为污染物的典型代表。
- When a fuel assembly comes out, highly radioactive fission products such as strontium 90 and cesium 137 are generating tens of kilowatts of heat. 当一块燃料组件取出时，诸如锶90和铯137这样的高强辐射产品将放出数万瓦的热量。
- Conclusion Strontium 90 is an isotope with shorter radiation distance and dramatic local bioeffects which can occlude the vessels at the early stage. So it is acceptable by the patients for its simple usage and satisfactory effect. 结论90锶利用其射程短、局部生物效应强的特点作用于瘤体的浅表组织,使扩张之血管早期退缩、闭塞后失去血液供应而达到治疗目的,其治疗方法简便,效果好,患者易于接受。
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- He went belting up/down the motorway at 90 mph. 他在高速公路上以每小时90英里的速度疾驶。
- A student who gets 90% is graded A. 凡得90分的学生列为甲等。
- Brandy of 90 proof is about 45% alcohol. 九十度的白兰地约含酒精百分之四十五。
- Her father is 90 years old and still going strong. 她父亲九十岁了，仍然很健康。
- If we add these marks up, we'll get a total of 90. 如果我们把这些分数加起来,总数就有九十分了。
- As a result, costs will be reduced by as much as 90%. 因此，成本将会降低90%25之多。
- strontium 90 锶九十
- You can't afford (ie are not in a position to spend) 90. 你可不能花90英镑。
- He is 90 but still retains (the use of) all his faculties. 他已90高龄，但身体功能都很好。
- Barite usually contain strontium and calcium. 重晶石常含锶和钙。
- As a result, they saved 90% of the trees in the forest. 结果他们拯救了这座森林里90％的树木。
- A car passed (ie overtook) me at 90 mph on the motorway. 在高速公路上有一辆汽车以每小时90英里的速度越过了我。
- Now that I'm 90, I find the exertions of travelling too great. 我已经年届90, 出远门已力不从心。
