|
A kind of sample in which every member of the population does not have a known probability of selection into the sample.
|
|
|
一种抽样方法.即人口中的每个个体被选为样本的概率不同.见方便抽样,有目的抽样,和定额抽样. |
|
A kind of self-compacting concrete that is fit for textile reinforced concrete(TRC, for short) was studied in this paper.
|
|
|
摘要配置了一种适用于纤维编织网增强混凝土结构的自密实混凝土，对其进行了自密实能力和力学性能的试验。 |
|
A kind of smart water level detection system is designed by adopting the design plan of smart water level sensor and transmitter composed ADμC812 MCU.
|
|
|
摘要采用由单片机ADμC812组成的智能水位传感器与变送器设计方案，设计了智能水位检测系统。 |
|
A kind of stainless steel flux-cored wire has been successfully developed , based on acid slag type system,by adding a bit of oxides and trace of deoxidizer ,adjusting the fluidity of melting slag to increase shielding of the back weld.
|
|
|
在酸性渣系的基础上，通过添加少量氧化物，调整熔渣的流动性，并加入微量的强脱氧剂，以增强背面焊缝的保护，研制成功一种背面不充氩的不锈钢打底单面焊双面成形专用药芯焊丝。 |
|
A kind of type that series of SMC products are whorl joining type radio frequency joining device, it is reliable that it is small, light, joins, Ant-vibration performance is easy to wait until the characteristic, support the radio to join the coaxial cabl
|
|
|
SMC系列产品是一种小型螺纹连接式射频连接器，它具有体积小、重量轻、连接可靠，抗振性能好等特点，供无线电设备和仪器中连接射频同轴电缆用。 |
|
A kind of ultra-rapid cooling experimental system for small sample was designed and developed.
|
|
|
摘要研制了一种用于小样品在低温冷却介质中实现超快速冷却的实验台。 |
|
A kind of writing that holds up to ridicule or contempt the weakness and wrongdoings of individuals, institutions or humanity in general.
|
|
|
讽刺：一种讽刺个人，习俗或人性中的缺点或错误的文体。 |
|
A kind word brings hope to the disadvantaged. A little light brings safety to night travelers.
|
|
|
一句良言，能为失望的人带来重生的希望；一丝灯光，能为夜行的人带来行路的安全。 |
|
A kind word is like a spring day.
|
|
|
一句温暖的话像春天一样。 |
|
A kind-hearted maid of the Heavenly Palace went down to the world hurriedly and told everybody about the news .
|
|
|
天宫里一位好心的宫女赶快来到人间，把这个消息告诉了大家。 |
|
A kindergarten is the first step to children's socialization, education and future.
|
|
|
幼儿园是儿童学会社交，受教育和通向未来的第一步。 |
