I observed above, that the new back, which it will always be found necessary to build in order to bring the fire sufficiently forward, in altering a Chimney constructed on the common principles, need never be thicker than the width of a common brick.--I may say the same of the thickness necessary to be given to the new sides, or covings, of the Chimney; or if the new back and covings are constructed of stone, one inch and three quarters, or two inches in thickness will be sufficient.--Care should be taken in building up these new walls to unite the back to the covings in a solid manner.英文原著 · 《ESSAYS-1》
I should not have mentioned the thickness of the basal plates at all, had I not thought it would give an unfair notion of the thickness of the walls to state the lesser measurements alone.英文原著 · 《More Letters of Charles Darwin Volume I》
I had no thought that you would measure the thickness of the walls of the cells; but if you will, and allow me to give your measurements, it will be an immense advantage. As it is no trouble, I send more specimens. If you measure, please observe that I measured the thickness of the walls of the hexagonal prisms not very near the base; but from your very interesting remarks the lower part of the walls ought to be measured.英文原著 · 《More Letters of Charles Darwin Volume I》
It was a matter of wall meet wall in terrific rushes, during which lads could feel their very hearts leaving them in the compress of friends and foes. They on the outskirts upheld the honour of their classes by squeezing into paper thickness the lungs of those of their fellows who formed the centre of the melee英文原著 · 《Active Service》
The various colors produced are owing to the thickness of the coating, and the maximum sensibility of the coating, as generally adopted, is when it assumes a deep yellow, or slightly tinged with rose color.英文原著 · 《American Hand Book of the Daguerreotype》
"With the battery prepared as above, and the solution of sulphate of copper in a vessel of proper dimensions to receive your plate, connect the galvanic current, and immerse the impressioned plate, letting it remain until a thin film of copper has been formed, then the battery can be strengthened, and the impression will be of sufficient thickness to be removed in from eight to twelve hours. An old Daguerreotype plate attached to the opposite pole of the battery (copper side towards the face of the plate to be electrotyped), will answer the same purpose as the silver-plate.英文原著 · 《American Hand Book of the Daguerreotype》