ผลการค้นหา

Boron (chemical symbol B)

แปลว่า(english) Element N. 5 of the periodic system. Atomic weight 10.82. It is gray in color, ignites at about 1112 (degrees) F. and burns with a brilliant green flame, but its melting point in a non-oxidizing atmosphere is about 4000 (degrees) F. Boron is used in steel in minute quantities for one purpose only- to increase the hardenability as in case hardening and to increase strength and hardness penetration.

atomizer

แปลว่าเครื่องฉีดของเหลวให้เป็นฝอย

atomic energy

แปลว่าพลังงานปรมาณู

atom

แปลว่าปรมาณู

atomize

แปลว่าทำให้เป็นละอองฝอย

Ligand

แปลว่า(Environmental Engineering) The ion or molecule which surrounds or complexes with the central atom or ion.

Electronegativity

แปลว่า(Environmental Engineering) The potential of an atom to attract electrons when the atom is bonded in a compound. The scale is 0 to 4 with 0 being the most electropositive (low attraction) and 4 being the most electronegative (high attraction).

Covalent bond

แปลว่า(Environmental Engineering) A bond in which electrons are shared approximately equally by two atoms.

anatomy of nature

แปลว่าสรีรวิทยาแห่งธรรมชาติว่าโดยโครงสร้างหรือองค์ประกอบของธรรมชาติ

Zinc

แปลว่า(english) Chemical Symbol Zn. Element No. 30 of the periodic system; atomic weight 65.38. Blue-white metal; when pure, malleable and ductile even at ordinary temperatures; melting point 787 (degrees) F.; boiling point 1665 (degrees) F., specific gravity 7.14. Can be electrodeposited; it is extensively used as a coating for steel and sheet zinc finds many outlets, such as dry batteries, etc. Zinc-base alloys are of great importance in die casting. Its most important alloy is brass.

atomic weight

แปลว่าน้ำหนักของปรมาณูของธาตุแท้ใด ๆ ย่อมเปรียบเทียบได้กับปรมาณูของไฮโดรเจน

Aromatic

แปลว่า(Environmental Engineering) A form of bonding in which ring compounds share electrons over more than two atoms. The electrons are delocalized. This leads to unusual ring stability.