搜尋結果
- $2755《頭家工具》 10kpa數位差壓計 氣壓測量 爐壓 11種壓力單位 MET-PMI14+ 數位式微壓計頭家工具-大老闆們口碑推薦儀器
- $2418《德源科技》r)(2014新品) GM-511 差壓計 GM511Deryuan 德源科技
- $2628《德源科技》r)(2014新品) GM-510 差壓計 GM510Deryuan 德源科技
- $3395空調通風檢測 高精度微差壓計 壓差檢測儀 機械設備壓力 鼓風設備壓力 MET-PMI14+2 測壓儀醫姆龍科技館
- $138445Cavwell-差壓表微壓差表差壓計風管7表060五金-可開統編Cavwell-卡夫
- $2266BENETECH標智數字壓力表差壓計測風壓 GM522壓力發動機負壓表Y9739慧慧(可開統編)
- $5800㊣宇慶S舖㊣PM-9100/ PM-9107 壓力/ 差壓計尚椿五金●北市萬華區●實體店面
- $4940【米勒線上購物】壓力計 Lutron PM-9102 壓力計 差壓計 可接電腦 需加購傳輸線、軟體米勒線上購物商城
- $1235新品 差壓計TL-103 管道氣體壓力測量儀器 不帶電池出貨- 可開發票Y7579315588
- $2755《頭家工具》10kpa數位差壓計 氣壓測量 爐壓 11種壓力單位 MET-PMI14+ 數位式微壓計頭家工具-大老闆們口碑推薦儀器
- $16500【米勒線上購物】壓力計 Lutron PAM-9212SD 記憶式風速/壓力/差壓計 可接電腦 需加購傳輸線、軟體米勒線上購物商城
- $3032現貨差壓變送器4-20ma氣壓管道差壓計風機4-20ma氣體微壓差風壓變送器可開發票Y7092607182
The trigonometric function are periodic functions, and their primitive period is 2π for the sine and the cosine, and π for the tangent, which is increasing in each open interval (π/2 + kπ, π/2 + (k + 1)π). At each end point of these intervals, the tangent function has a vertical asymptote .
A plot of normal distribution (or bell-shaped curve) where each band has a width of 1 standard deviation – See also: 68–95–99.7 rule. Cumulative probability of a normal distribution with expected value 0 and standard deviation 1 In statistics, the standard deviation is a measure of the amount of variation of a random variable expected about its mean.
The Navier–Stokes equations ( / nævˈjeɪ stoʊks / nav-YAY STOHKS) are partial differential equations which describe the motion of viscous fluid substances. They were named after French engineer and physicist Claude-Louis Navier and the Irish physicist and mathematician George Gabriel Stokes. They were developed over several decades of ...
Pearson correlation coefficient. Several sets of ( x , y) points, with the correlation coefficient of x and y for each set. The correlation reflects the strength and direction of a linear relationship (top row), but not the slope of that relationship (middle), nor many aspects of nonlinear relationships (bottom).
Example of samples from two populations with the same mean but different variances. The red population has mean 100 and variance 100 (SD=10) while the blue population has mean 100 and variance 2500 (SD=50) where SD stands for Standard Deviation. In probability theory and statistics, variance is the expected value of the squared deviation from the mean of a random variable.
Viète. de Moivre. Euler. Fourier. v. t. e. In trigonometry, trigonometric identities are equalities that involve trigonometric functions and are true for every value of the occurring variables for which both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles.
Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is. The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...