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10-9的意思
1、【医】ppb
10-9的相关词组
1、9 o'clock 九点;九点钟
2、Zone 9 九区；第九区；区域9
3、Windows 10 Windows 10操作系统
4、C 10 【医】Decamethonium Bromide
10-9的双语例句
1、The time accuracy of the clock is ≤ 3 X 10-9/ day.
这个钟的时间精度为≤3×10~（-9）/天。
2、Reference to national standard, Relay test accuracy achieved 10-5, crystal achieved 10-9.
参照国标要求，对继电器测试精度达到10-5，对晶振的测试精度达到10-9。
3、Nanometer is a kind of scale unit. One nanometer is 10-9 meter.
纳米是一种度量单位，1nm为10-9m。
4、The gold content above 10-9 in lead metal and lead oxide can be accurately determined by this method.
测定方法可准确测定金属铅及氧化铅样品中10~（-9）级的金。
5、By PZT control the frequency stabilization is realized. Frequency stability of 2.5 × 10-9 can be achieved.
采用压电陶瓷控制实现稳频，频率稳定度可达2.5×10~（-9）。
6、GPS technology has been used in lots of fields, and GPS relative positioning accuracy has been achieved the level of 10-9.
GPS技术已在多学科各个领域有着很重要的应用，GPS相对定位精度已经达到10-9。
7、A mean failure rate of less than 10-9/ h for a microwave LN GaAs FET was obtained.
并获得了微波低噪声GaAs FET在室温条件下的平均失效率已低于10~（-9）/h的结果。
8、One billionth ( 10-9) of a gram.
毫微克十亿分之一克（10－9）
9、It is possible to get detection limits below 1 × 10-9 ( V/ V) using a flame ionization detector.
用氢焰电离检测器能得到1×10－9（V／V）以下的检测限。
10、Non-drinking water [ ( 5-10) × 10-9];
非饮用水〔（5～10）×10－9〕；
11、Cu+ possesses a strong thermo-diffusion with diffusivity of about 10-9 cm2/ s in ZnS.
Cu+在ZnS中具有很高的热扩散率，500℃时热扩散系数已达10-9cm2/s，是各种杂质中热扩散最强的杂质。
12、The minimum detectable value of sorbic acid is 1 × 10-9 g, coefficient of variation ( CV) is 0.18%, recovery rate is 99.81%.
回收率为99.81%；CV（变异系数）为0.18%。
13、It has been proved by industry application test that the catalyst has high purifying depth(≤ 10 10-9) and purifying capacity(≥ 18mgAs/ gcat.).
工业应用实验证明，该催化剂具有净化深度高（≤10×10~（-9）），净化容量大（≥18mgAs/gcat.）
14、UHV obtaining technology has been successfully developed to achieve an ultra high base pressure of 6 × 10-9 Pa for Lanzhou heavy ion cooler-storage ring project ( HIRFL-CSR).
形成并成功地实施一套完整的超高真空获得方案，以满足兰州重离子加速器冷却储存环（HIRFL-CSL）6×10-9Pa超高真空度的要求。
15、It has been tested that frequency stability of instrument developed reaches 1.74 × 10-9, temperature of laser tube is around 430C when frequency is stabilized, which achieves the anticipation.
仪器完成了设计、装调、运行任务，并对其频率稳定度进行了实测，频率稳定度指标为1.74×10-9，稳频时激光管温度在430C左右，达到了预期目标。
16、The signal of 5 × 10-9 M. DPPH may be observed on the oscillograph. The ratio of signal to noise is 2:1. The operation frequency is 9690 Mc,/ s.
在示波器上可以观察到5×10~（-9）克分子DPPH的讯号，讯号噪声比为2：1，仪器的工作频率是9690Mc/s。
17、The space scale of GPS data vary from region to the global, and its time scale vary from seconds to years. Its precision of relative positioning for long baseline can reach the magnitude of 10-9.
GPS资料的空间尺度从区域到全球，时间尺度从数秒、数小时到数十年，长基线相对定位精度可达10-9的量级。
18、Comparing with the iodine absorbing stabilized frequency standard laser national standard by the method of beat frequency, we found the frequency stability of this laser is 1 × 10-9 and it can work continuously over eight hours.
与国家计量测试研究院的碘吸收稳频标准激光器拍频，频率稳定度为1×10~（-9）。
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