与 «DRAWTUBE»相关的英语书籍
在以下的参考文献中发现
drawtube的用法。与
drawtube相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
Observing Variable Stars, Novae and Supernovae
Put a small piece of thin paper (or other translucent material) across the mouth of
the focuser drawtube and adjust until the image of the Moon, or whatever bright
object, is in sharp focus. Either mark the drawtube, or measure the distance of ...
2
Setting-Up a Small Observatory: From Concept to ...
This is tested using a small light source, or better, a laser, placed at the drawtube,
with a piece of glass between it and the telescope. The light is reflected off the
glass surfaces, and, with adjustment of the objective cell, the reflection off the ...
P. Moore, David Arditti, 2007
3
Advanced Amateur Astronomy
This is really no more than a plug which fits into the telescope drawtube and
which has a small hole (1 .5 mm diameter is best) drilled exactly centre. Its
function is to steer your eye onto the axis of the drawtube. A 35 mm film canister
should fit ...
4
Observing the Solar System: The Modern Astronomer's Guide
Treat the collimation as you would for the latter stages ofa classical Newtonian
telescope. 'SQUARING ON' THE EYEPIECE FOCUSING MOUNT If the drawtube
is not aligned to the optical axis of the telescope, the focal planes of the eyepiece
...
5
Observing the Sun with Coronado™ Telescopes
At the rear of the MaxScope 90 are two nylon thumbscrews that hold the main
drawtube in place. Loosening these will allow the main drawtube to be extended.
There is also a secondary drawtube connected to the main one that will allow you
...
6
Precision Machining Technology
Figure 5.2.10 shows some examples of spring collets. One method of using
spring collets for lathe operations utilizes a spindle collet adapter and a drawtube
. A collet adapter, or sleeve, is mounted in the tapered bore of the headstock
spindle.
Peter Hoffman, Eric Hopewell, Brian Janes, 2014
7
An Amateur's Guide to Observing and Imaging the Heavens
Instead, a round axle is pressed against a flat plate on the side of the focuser
drawtube, relying solely on friction to move the drawtube as the axle is turned.
The opposite side of the drawtube is pressed against a set of ball or roller
bearings ...
... interest, a 2-inch (50.8 mm) focuser must be regarded as essential these days,
if only to exploit the range of superb wide- field eyepieces available. The position
of the Newtonian drawtube varies considerably from the photographic to the ...
Peter Knoll, Georg Kowalle, 1996
9
The use of the microscope
For most routine work, have the drawtube fixed permanently at the right length by
a special screw, or use an instrument without. drcwtubc. Correct covers are better
than correction by drawtube. (IIIAPTI'JR XV THE EYEPIECE Kinds of Eyepiecc.
10
Astronomical Equipment for Amateurs
Not only does this result in an unwieldy system, but it necessitates a drawtube of
similar length, which may vignette the light cone in fast optical systems. For
example, to illuminate fully a mere 20 mm circle on film at f/5 requires the throat of
the ...
包含词语«DRAWTUBE»的新条目
找出国内和国际出版社所讨论的内容，以及词语
drawtube在以下新条目的上下文中是如何使用的。
Cannabis withdrawal symptoms common among teens
... which inflict harm blamed on the cannabis, rather than using a vaporizer (385F/195C) or a 25-mg-per-serving Flexible Drawtube One-Hitter? «ScienceBlog.com, 九月 14»
Anti-pot camp ramping up campaign
Apparently they either do not know or don't want anyone to know there are alternatives such as a VAPORIZER or a Flexible Drawtube ... «Sarasota Herald-Tribune, 八月 14»
Obama Administration "Willing To Work" With Congress To …
(A) SUBSTITUTE cannabis for tobacco, and (B) SUBSTITUTE a 25-mg. single-toke utensil with a long drawtube (cheaply handmade) or ... «The Weed Blog, 四月 14»
The Motivation Behind Amotivational Syndrome
And “side-stream smoke” (avoided by using a Vaporizer or Long-Drawtube Single-Toke utensil) contains five times as much carbon monoxide ... «Ladybud Magazine, 三月 14»
New York Voters Support Marijuana Legalization
In the case of cannabis this means POSITIVELY promote use of vaporizers and Long-Drawtube One-Hitters (25-mg serving size) to replace ... «The Weed Blog, 二月 14»
The only way to end the war on drugs is to stop fighting it
For information about Long-Drawtube One-Hitters google Long-Drawtube One-Hitters. http://www.peter-reynolds.co.uk Peter Reynolds. «Spectator.co.uk, 一月 14»
Calculating Your Cost Per Car
Put the drawtube into the container, making sure not to let it to touch the bottom. Keep it suspended and secure during the reading. Draw the product through the ... «Carwash Online, 四月 13»
IMTS 2012: Lever-Operated Counterbalanced Chucks
Hardinge lever-operated chucks have a drawtube connected to the jaws through a pivoting lever that is mounted on pins inside the chuck body. «American Machinist, 九月 12»
Vixen R130Sf Newtonian Reflector Telescope and PortaMount II …
The extension/adapter needs to be screwed over the focuser drawtube to bring the eyepiece out to the proper focal length for perfect focus for ... «Universe Today, 七月 09»
Collet Closer holds parts up to 6 in. diameter.
Operating at max of 150 psi air or 750 psi hydraulic, drawtube force is 7.5 x line pressure, yielding theoretical clamping force of 1,688 lb on air ... «ThomasNet Industrial News Room, 十二月 05»
