The phrase "a spacing of two" is correct and usable in written English.
It can be used when referring to the amount of space between elements, such as lines of text or characters in a document.
Example: "For this document, please ensure there is a spacing of two between each line to improve readability."
Alternatives: "a gap of two" or "a distance of two".
WiMAX defines a preamble symbol with pilot subcarriers generated from a pseudo-noise sequence modulated as binary phase-shift keying (BPSK), with a spacing of two guard subcarriers between them.
Thus, it could be suggested that the phenylalanine residue and spacing in the N-terminal region of cytochrome c are both essential for optimal heme attachment performance by HCCS, although some heme attachment can occur with a spacing of two.
An approximate consensus sequence is (C/t TAT{T/a}(T/a)(A/t TA(G/a) with a spacing of two base pairs between the (C/t TAT and the (A/t TA(G/a) palindromic binding motif of each unit of the homodimer.
Three-year-old olive trees of the variety 'Grappolo 541' were planted with a spacing of three meters between plants and five meters between rows in the area studied.
One of these latter motifs has a spacing of four cysteines summarized by C-X4-C-X5-C-X6-10-C [44], [44].
Amino acids with a spacing of three or four may be found on the same face of an alpha helix and cysteine residues in those positions can form disulfide bonds between two adjacent helices, thus covalently linking helices.
Within a space of two hours the city has been plunged into a state of open revolution.
After the attacks, more than 4,500 aircraft nationwide were forced to land or were diverted in a space of two and a half hours.
The drive of a microcosm of sorts about LSU's offense this season: It can look excellent, then inept – and all in a space of two plays.
This would be a second exile for the Nabokovs — in a space of two decades, they had escaped both the Bolsheviks and the Nazis, each time by a matter of hours.
July 13 (Reuters) - On the night of July 4, some Detroit residents watched fireworks, and others just watched fires, more than a dozen in a space of two hours.
