铅挡块,lead block
1)lead block铅挡块
1.Make,application and quality control of low melting-point lead block;低熔点铅挡块的制作、应用以及质量保证
英文短句/例句

1.Application of technique of face-neck combined individualized low-melting-point lead block in radiotherapy of nasopharyngeal carcinoma个体化低熔点铅挡块技术在鼻咽癌放疗中的应用
2.Comparison of Conformal Plumbic Blocks Made with Traditional Mold and New Mold传统模具与新型模具制作适形铅挡块的比较分析
3.You'll have to put on another windscreen.你得换一块挡风玻璃。
4.stationary barrier固定支架,固定挡块
5.Knee Blocker Remove/Install膝部挡块的拆卸/安装
6.Application with Photoshop in Integrate block at the nasopharyngeal carcinomaPhotoshop在鼻咽癌整体挡铅中的应用
7.He has a rubber in his pencil case.他铅笔盒里有块橡皮。
8.The part of a block of type underlying the impression surface.铅字身印刷面以下的铅字块
9.Application of scenic granitiform retaining wall in the bank protection project景观砌块挡土结构在护岸挡墙工程中的应用
10.A fixed or movable shield against glare attached above the windshield of an automotive vehicle.遮阳板汽车挡风玻璃上一块用以挡强烈阳光的固定不动的挡板
11.a crude block of lead or iron poured from a smelting furnace.从熔炉里倒出来的未加工的铁块(铅块)。
12.Development of Two-dimensional Activity Lung Block Lead Frame Used in Systemic Radiotherapy全身放射治疗用二维活动肺挡铅架的研制
13.It is very fast to use computation module to process files.利用计算模块来处理文挡 速度很快.
14.Mary took a plastic tablecloth to keep off the rain玛丽拿一块塑料台布挡雨。
15.Error Analysis and Quality Assurance of Manufacture on Baffle Plate of Radiation Field射野挡块制作的误差分析和质量保证
16.A lead weight suspended by a line, used to make soundings.铅锤用绳子悬挂一块铅制的重物,用来测量水深
17.A crude block of metal, chiefly iron or lead, poured from a smelting furnace.生铁块从熔炉中倒出的生金属块,主要是铁块和铅块
18.Defeat lay on her spirit like lead.失败像铅块一般沉重地压着她。
相关短句/例句

conformal plumbic blocks适形铅挡块
1.Objective To discuss errors of conformal plumbic blocks made with manual cutter and automatic cutter.目的:探讨手动切割机与自动切割机制作适形铅挡块的误差。
2.Objective To discuss the differences between conformal plumbic blocks made and traditional mold and new mold.目的探讨传统模具与新型模具制作适形铅挡块的误差。
3)three-dimensional physics compensator三维熔铅挡块
4)low-melting-point lead block低熔点铅挡块
1.Application of technique of face-neck combined individualized low-melting-point lead block in radiotherapy of nasopharyngeal carcinoma个体化低熔点铅挡块技术在鼻咽癌放疗中的应用
5)low-melting-point lead irregular shield低熔点铅不规则挡块
1.Objective To evaluate the radiotherapy effects on nasopharyngeal carcinoma with low-melting-point lead irregular shield technique.目的 探讨低熔点铅不规则挡块等中心治疗在鼻咽癌放疗中的价值。
6)lead-alloy block挡铅
1.The study about combined multileaf collimator with lead-alloy blocks form a mantle field in radiotherapy of Hodgkin' s disease多叶光栅与挡铅联合设野在斗蓬野布置中的研究
延伸阅读

铅-铅测年分子式:CAS号:性质:238U和235U两个母体铀同位素的特性实质相同,所产生的放射性成因206,207Pb的方程可合并为(207Pb/206Pb)=[(235U/238U)](t-1)。235U/238U现在的比值是1/137.8,利用非放射性成因‘稳定’204Pb作为参考同位素,作(207Pb/204Pb)与(206Pb/204Pb)的Pb-Pb等时线,应用方程计算年龄,式中(207Pb/204Pb)和(206Pb/204Pb)0是初始比值。