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  2. De Brouckere mean diameter - Wikipedia

    en.wikipedia.org/wiki/De_Brouckere_mean_diameter

    Example showing the difference between D 50 and the De Brouckere Mean on a typical volume-weighted particle size distribution. The De Brouckere mean diameter is the mean of a particle size distribution weighted by the volume (also called volume-weighted mean diameter, volume moment mean diameter. [1] or volume-weighted mean size [2]). It is the ...

  3. 0.999... - Wikipedia

    en.wikipedia.org/wiki/0.999...

    Thus 0.(9) 1 = 0.9, 0.(9) 2 = 0.99, 0.(9) 3 = 0.999, and so on. One has 1 − 0.(9) 1 = 0.1 = ... The difference between the two is the surreal number ...

  4. List of Focke-Wulf Fw 190 variants - Wikipedia

    en.wikipedia.org/wiki/List_of_Focke-Wulf_Fw_190...

    Orthographically projected diagram of the Fw 190 D-9 A side view of the NMUSAF's D-9. One can easily distinguish the D-9 model from earlier variants by the extended nose and tail sections, in addition to the exhaust manifolds located near the base of the engine cowling. Data from [citation needed] General characteristics. Crew: 1; Length: 10.2 ...

  5. Military designation of days and hours - Wikipedia

    en.wikipedia.org/wiki/Military_designation_of...

    Times relative to the designation are indicated with +/−[Arabic numeral] after the letter, replacing -day or -hour with a count of the same unit: "D−1" (the day before D-Day), "L+9" (9 hours after L-Hour) etc. [citation needed] In less formal contexts, the symbol or numeral may be spelled out: "D minus 1" or "L plus nine."

  6. Triangular number - Wikipedia

    en.wikipedia.org/wiki/Triangular_number

    The final digit of a triangular number is 0, 1, 3, 5, 6, or 8, and thus such numbers never end in 2, 4, 7, or 9. A final 3 must be preceded by a 0 or 5; a final 8 must be preceded by a 2 or 7. In base 10, the digital root of a nonzero triangular number is always 1, 3, 6, or 9. Hence, every triangular number is either divisible by three or has a ...

  7. Experts Say This Is Real Difference Between Vitamin D and D3

    www.aol.com/experts-real-difference-between...

    To ensure that you are getting enough of all the different forms, keep reading to find out the difference between vitamin D, D2, D3, and how each of them are essential to your health.

  8. AOL Mail

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Caterpillar D9 - Wikipedia

    en.wikipedia.org/wiki/Caterpillar_D9

    The D9L was replaced by the 520 hp (390 kW) D10N in 1987. The 370 hp (280 kW) D9N replaced D8L in 1987. The main difference between the D9T and the D9R is the installment of the new Cat C18 ACERT inline-six engine in the D9T vs the V8 3408 HEUI in the D9R. The D9R has clutch and brake steering, while the D9T has differential steering.