Two astigmatic image surfaces correspond to one object plane ; and these are in contact at the axis point ; on the one lie the focal lines of the first kind, on the other those of the second.

Both differ substantially from the Book of Common Prayer, though the latter includes in the Order Two form of the Holy Communion a very slight revision of the prayer book service, largely along the lines proposed for the 1928 Prayer Book.

Two rail lines exist, both originating in Phnom Penh and totaling about 612 kilometers of metre gauge single track.

Two nationalized shipping lines serve West Africa and Europe.

Two lines operated-the Demerara-Essequibo Railway, from Vreed en Hoop to Parika () and the Demerara-Berbice Railway, from Georgetown to Rosignol ().

Two lines of an otherwise lost poem about the god, Heimdalargaldr, survive.

Two of these six helices are separated by a loop that lines the pore and is the primary determinant of ion selectivity and conductance in this channel class and some others.

* lines 15. 33-92 – Two neighboring cities hated each other.

Two generations later, Richard Crashaw caught up the universal sentiment, when in his lines " Upon Bishop Andrewes ' Picture before his Sermons " he exclaims:

* November 2007: Human induced pluripotent stem cells: Two similar papers released by their respective journals prior to formal publication: in Cell by Kazutoshi Takahashi and Shinya Yamanaka, " Induction of pluripotent stem cells from adult human fibroblasts by defined factors ", and in Science by Junying Yu, et al., from the research group of James Thomson, " Induced pluripotent stem cell lines derived from human somatic cells ": pluripotent stem cells generated from mature human fibroblasts.

Two important examples are the contrast between the lines, " Quick, send in the clowns " and " Well, maybe next year.

Two lines are parallel if and only if their slopes are equal and they are not coincident or if they both are vertical and therefore have undefined slopes.

Two lines are perpendicular if the product of their slopes is − 1 or one has a slope of 0 ( a horizontal line ) and the other has an undefined slope ( a vertical line ).

Two air lines control the trailer unit.

Two broad gauge Pakistan Railways lines terminate near the border at Chaman in Balochistan near the Khojak Pass ; and at Torkham, the border town near the Khyber Pass.

Two other lines stem from Toruń, toward Malbork and Sierpc.

Two main trunk lines, the Main Line and Montauk Branches, spin off nine smaller branches.

Two chorus lines, one of four chorus girls and one of four chorus boys then took turns crossing the stage, the former group entering from stage right and the latter from stage left.

Two natural gas lines parallel the old petroleum line as far as Tbilisi, where they turn north across the Caucasus Mountains to join the grid of natural gas pipelines that supply cities throughout Russia and Eastern Europe.

Two simple NIDs, carrying six lines each, on the outside of a building

He was having trouble remembering his lines, a problem he had never previously encountered ( for this reason he was fired from Barbra Streisand's film The Mirror Has Two Faces ).

Two other lines are currently in the planning stage.

Two overt examples of pyramid schemes are a Chain Letter and a Ponzi Scheme, while a stock market bubble, particularly fueled by lines of credit ( margin accounts ) is a more subtle example.

Two miles ( 3 km ) behind the front lines, out of sight of the Confederates, the men of the USCT division were trained for two weeks on the plan.

Two thieves are crucified with Christ, one saved and the other damned.

Two of the vital qualities demanded of a politician by other politicians are that he always keep a confidence and that he keep his word.

Two poets are paired on each record, in the order given above.

Two Anabaptists, Caroli and Benoit, are to challenge you and William to a debate before the Council.

Two features are immediately evident.

Two cities to be considered, Providence and Cranston, are an enigma.

Two walls of concrete blocks are constructed at least 20 inches apart.

Two or more dogs are mounted on each locking bar.

Two very useful ways for modifying a form-dictionary are the addition to the dictionary of complete paradigms rather than single forms and the application of a single change to more than one dictionary form.

Two metabolites ( 1, and 2 ) ) of p-aminobenzoic acid ( PABA ) which act as cofactors for the hydroxylation of aniline by acid-fast bacteria are biosynthesized from Aj.

Two of the clamps are fixed to the edges of the board whereas two clamps travel on guide rails opposite the fixed clamps.

Two unsolved mysteries are based on these facts.

Two of these are in or near Dallas and the others away from the vicinity.

`` Two, wage costs are a fraction of the U.S. costs.

Two sharply contrasting places designed for public enjoyment are now on display.

Two apparent experimental methods of increasing F are increasing the

Two of the most well-known applications of the pure elements are rubidium and caesium atomic clocks, of which caesium atomic clocks are the most accurate representation of time known as of.

Two of the genera, Hemerocallis ( day lily ) and Phormium ( New Zealand flax ), are grown as ornamentals worldwide.

Two 13-person juries composed of artists, academics, critics and AFI Trustees deliberate, discuss and determine the honored ensembles, who are then feted at a private event in January.

Seven stories are inspired by a nursery rhyme: And Then There Were None by Ten Little Indians ; One, Two, Buckle My Shoe by One, Two, Buckle My Shoe ; Five Little Pigs by This Little Piggy ; Crooked House by There Was a Crooked Man ; A Pocket Full of Rye by Sing a Song of Sixpence ; Hickory Dickory Dock by Hickory Dickory Dock, and Three Blind Mice by Three Blind Mice.

* 1920 – Two security guards are murdered during a robbery in South Braintree, Massachusetts.

* 2008 – Two skeletal remains found near Ekaterinburg, Russia are confirmed by Russian scientists to be the remains of Alexei Nikolaevich, Tsarevich of Russia and one of his sisters.

Two other alcohols whose uses are relatively widespread ( though not so much as those of methanol and ethanol ) are propanol and butanol.